diff --git a/radio/src/functions.cpp b/radio/src/functions.cpp
index 0f93ca786..0d1ebbf38 100644
--- a/radio/src/functions.cpp
+++ b/radio/src/functions.cpp
@@ -169,14 +169,14 @@ void evalFunctions(const CustomFunctionData * functions, CustomFunctionsContext
             if (param == 0)
               newActiveFunctions |= 0x0F;
             else if (param <= NUM_STICKS)
-              newActiveFunctions |= (1 << (param-1));
+              newActiveFunctions |= (1 << (param - 1));
             else if (param == NUM_STICKS + 1)
-              newActiveFunctions |= (1 << FUNCTION_TRAINER_CHANNELS);
+              newActiveFunctions |= (1u << FUNCTION_TRAINER_CHANNELS);
             break;
           }
 
           case FUNC_INSTANT_TRIM:
-            newActiveFunctions |= (1 << FUNCTION_INSTANT_TRIM);
+            newActiveFunctions |= (1u << FUNCTION_INSTANT_TRIM);
             if (!isFunctionActive(FUNCTION_INSTANT_TRIM)) {
               if (IS_INSTANT_TRIM_ALLOWED()) {
                 instantTrim();
diff --git a/radio/src/gui/128x64/model_special_functions.cpp b/radio/src/gui/128x64/model_special_functions.cpp
index a0472d681..bfcee26c3 100644
--- a/radio/src/gui/128x64/model_special_functions.cpp
+++ b/radio/src/gui/128x64/model_special_functions.cpp
@@ -224,15 +224,17 @@ void menuSpecialFunctions(event_t event, CustomFunctionData * functions, CustomF
           if (func == FUNC_TRAINER) {
             maxParam = NUM_STICKS + 1;
             uint8_t param = CFN_CH_INDEX(cfn);
-            if (param == NUM_STICKS + 1)
-              lcdDrawText(MODEL_SPECIAL_FUNC_3RD_COLUMN, y, "Chans", attr);
+            if (param == 0)
+              lcdDrawText(MODEL_SPECIAL_FUNC_3RD_COLUMN, y, STR_STICKS, attr);
+            else if (param == NUM_STICKS + 1)
+              lcdDrawText(MODEL_SPECIAL_FUNC_3RD_COLUMN, y, STR_CHANS, attr);
             else
-              drawSource(MODEL_SPECIAL_FUNC_3RD_COLUMN, y, CFN_CH_INDEX(cfn) == 0 ? 0 : MIXSRC_Rud + CFN_CH_INDEX(cfn) - 1, attr);
+              drawSource(MODEL_SPECIAL_FUNC_3RD_COLUMN, y, MIXSRC_Rud + param - 1, attr);
           }
 #if defined(GVARS)
           else if (func == FUNC_ADJUST_GVAR) {
             maxParam = MAX_GVARS-1;
-            drawStringWithIndex(lcdNextPos, y, STR_GV, CFN_GVAR_INDEX(cfn)+1, attr);
+            drawStringWithIndex(lcdNextPos + 2, y, STR_GV, CFN_GVAR_INDEX(cfn)+1, attr);
             if (active) CFN_GVAR_INDEX(cfn) = checkIncDec(event, CFN_GVAR_INDEX(cfn), 0, maxParam, eeFlags);
             break;
           }
diff --git a/radio/src/gui/212x64/model_special_functions.cpp b/radio/src/gui/212x64/model_special_functions.cpp
index eb1bcb58d..7c2d1e139 100644
--- a/radio/src/gui/212x64/model_special_functions.cpp
+++ b/radio/src/gui/212x64/model_special_functions.cpp
@@ -216,15 +216,17 @@ void menuSpecialFunctions(event_t event, CustomFunctionData * functions, CustomF
           if (func == FUNC_TRAINER) {
             maxParam = NUM_STICKS + 1;
             uint8_t param = CFN_CH_INDEX(cfn);
-            if (param == NUM_STICKS + 1)
-              lcdDrawText(lcdNextPos, y, "Chans", attr);
+            if (param == 0)
+              lcdDrawText(MODEL_SPECIAL_FUNC_3RD_COLUMN, y, STR_STICKS, attr);
+            else if (param == NUM_STICKS + 1)
+              lcdDrawText(MODEL_SPECIAL_FUNC_3RD_COLUMN, y, STR_CHANS, attr);
             else
-              drawSource(lcdNextPos, y, CFN_CH_INDEX(cfn)==0 ? 0 : MIXSRC_Rud+CFN_CH_INDEX(cfn)-1, attr);
+              drawSource(MODEL_SPECIAL_FUNC_3RD_COLUMN, y, MIXSRC_Rud + param - 1, attr);
           }
 #if defined(GVARS)
           else if (func == FUNC_ADJUST_GVAR) {
             maxParam = MAX_GVARS-1;
-            drawStringWithIndex(lcdNextPos, y, STR_GV, CFN_GVAR_INDEX(cfn)+1, attr);
+            drawStringWithIndex(lcdNextPos + 2, y, STR_GV, CFN_GVAR_INDEX(cfn)+1, attr);
             if (active) CFN_GVAR_INDEX(cfn) = checkIncDec(event, CFN_GVAR_INDEX(cfn), 0, maxParam, eeFlags);
             break;
           }
diff --git a/radio/src/gui/480x272/model_special_functions.cpp b/radio/src/gui/480x272/model_special_functions.cpp
index f646b027c..fdc063dc9 100644
--- a/radio/src/gui/480x272/model_special_functions.cpp
+++ b/radio/src/gui/480x272/model_special_functions.cpp
@@ -217,10 +217,12 @@ bool menuSpecialFunctions(event_t event, CustomFunctionData * functions, CustomF
           if (func == FUNC_TRAINER) {
             maxParam = NUM_STICKS + 1;
             uint8_t param = CFN_CH_INDEX(cfn);
-            if (param == NUM_STICKS + 1)
-              lcdDrawText(MODEL_SPECIAL_FUNC_2ND_COLUMN_EXT, y, "Chans", attr);
+            if (param == 0)
+              lcdDrawText(MODEL_SPECIAL_FUNC_2ND_COLUMN_EXT, y, STR_STICKS, attr);
+            else if (param == NUM_STICKS + 1)
+              lcdDrawText(MODEL_SPECIAL_FUNC_2ND_COLUMN_EXT, y, STR_CHANS, attr);
             else
-              drawSource(MODEL_SPECIAL_FUNC_2ND_COLUMN_EXT, y, CFN_CH_INDEX(cfn)==0 ? 0 : MIXSRC_Rud+CFN_CH_INDEX(cfn)-1, attr);
+              drawSource(MODEL_SPECIAL_FUNC_2ND_COLUMN_EXT, y, MIXSRC_Rud + param - 1, attr);
           }
 #if defined(GVARS)
           else if (func == FUNC_ADJUST_GVAR) {
diff --git a/radio/src/mixer.cpp b/radio/src/mixer.cpp
index 6d9d543cf..e4b701c9c 100644
--- a/radio/src/mixer.cpp
+++ b/radio/src/mixer.cpp
@@ -232,7 +232,7 @@ int16_t applyLimits(uint8_t channel, int32_t value)
 #endif
 
   if (isFunctionActive(FUNCTION_TRAINER_CHANNELS) && IS_TRAINER_INPUT_VALID()) {
-    return ppmInput[channel];
+    return ppmInput[channel] * 2;
   }
 
   LimitData * lim = limitAddress(channel);
@@ -369,22 +369,22 @@ getvalue_t getValue(mixsrc_t i)
 #endif
 
   else if (i <= MIXSRC_LAST_LOGICAL_SWITCH) {
-    return getSwitch(SWSRC_FIRST_LOGICAL_SWITCH+i-MIXSRC_FIRST_LOGICAL_SWITCH) ? 1024 : -1024;
+    return getSwitch(SWSRC_FIRST_LOGICAL_SWITCH + i - MIXSRC_FIRST_LOGICAL_SWITCH) ? 1024 : -1024;
   }
   else if (i <= MIXSRC_LAST_TRAINER) {
-    int16_t x = ppmInput[i-MIXSRC_FIRST_TRAINER];
-    if (i<MIXSRC_FIRST_TRAINER+NUM_CAL_PPM) {
-      x -= g_eeGeneral.trainer.calib[i-MIXSRC_FIRST_TRAINER];
+    int16_t x = ppmInput[i - MIXSRC_FIRST_TRAINER];
+    if (i < MIXSRC_FIRST_TRAINER + NUM_CAL_PPM) {
+      x -= g_eeGeneral.trainer.calib[i - MIXSRC_FIRST_TRAINER];
     }
-    return x*2;
+    return x * 2;
   }
   else if (i <= MIXSRC_LAST_CH) {
-    return ex_chans[i-MIXSRC_CH1];
+    return ex_chans[i - MIXSRC_CH1];
   }
 
   else if (i <= MIXSRC_LAST_GVAR) {
 #if defined(GVARS)
-    return GVAR_VALUE(i-MIXSRC_GVAR1, getGVarFlightMode(mixerCurrentFlightMode, i - MIXSRC_GVAR1));
+    return GVAR_VALUE(i - MIXSRC_GVAR1, getGVarFlightMode(mixerCurrentFlightMode, i - MIXSRC_GVAR1));
 #else
     return 0;
 #endif
@@ -402,11 +402,11 @@ getvalue_t getValue(mixsrc_t i)
 #endif
   }
   else if (i <= MIXSRC_LAST_TIMER) {
-    return timersStates[i-MIXSRC_FIRST_TIMER].val;
+    return timersStates[i - MIXSRC_FIRST_TIMER].val;
   }
 
   else if (i <= MIXSRC_LAST_TELEM) {
-    if(IS_FAI_FORBIDDEN(i)) {
+    if (IS_FAI_FORBIDDEN(i)) {
       return 0;
     }
     i -= MIXSRC_FIRST_TELEM;
diff --git a/radio/src/translations.cpp b/radio/src/translations.cpp
index 2824a461c..bd02e28fc 100644
--- a/radio/src/translations.cpp
+++ b/radio/src/translations.cpp
@@ -439,6 +439,7 @@ const char STR_MIXNAME[] = TR_MIXNAME;
 const char STR_INPUTNAME[] = TR_INPUTNAME;
 const char STR_EXPONAME[] = TR_EXPONAME;
 const char STR_TRAINER[] = TR_TRAINER;
+const char STR_CHANS[]  = TR_CHANS;
 const char STR_MODULE_BIND[] = TR_MODULE_BIND;
 const char STR_POWERMETER_ATTN_NEEDED[] = TR_POWERMETER_ATTN_NEEDED;
 const char STR_PXX2_SELECT_RX[] = TR_PXX2_SELECT_RX;
diff --git a/radio/src/translations.h b/radio/src/translations.h
index 5405bad76..01ccba57e 100644
--- a/radio/src/translations.h
+++ b/radio/src/translations.h
@@ -722,6 +722,7 @@ extern const char STR_EXPONAME[];
 #endif
 
   extern const char STR_TRAINER[];
+extern const char STR_CHANS[];
 extern const char STR_MODULE_BIND[];
 extern const char STR_POWERMETER_ATTN_NEEDED[];
 extern const char STR_PXX2_SELECT_RX[];
diff --git a/radio/src/translations/cz.h.txt b/radio/src/translations/cz.h.txt
index 8cd04159d..e91fcc6fd 100644
--- a/radio/src/translations/cz.h.txt
+++ b/radio/src/translations/cz.h.txt
@@ -207,7 +207,7 @@
 #endif
 
 #ifdef GVARS
-  #define TR_ADJUST_GVAR               "Nastav \0   "
+  #define TR_ADJUST_GVAR               "Nastav\0    "
 #else
   #define TR_ADJUST_GVAR               "[Nastav GP]"
 #endif
@@ -913,6 +913,7 @@
 #define TR_CALIBRATION                 "Kalibrace"
 #define TR_SET                         BUTTON("Nast")
 #define TR_TRAINER                     "Trenér"
+#define TR_CHANS                       "Chans"
 #define TR_ANTENNAPROBLEM              CENTER "Problém s TX anténou!"
 #define TR_MODELIDUSED                 TR("ID již použito","ID modelu je již použito")
 #define TR_MODULE                      "Modul"
diff --git a/radio/src/translations/de.h.txt b/radio/src/translations/de.h.txt
index 74deb9772..73a1faf06 100644
--- a/radio/src/translations/de.h.txt
+++ b/radio/src/translations/de.h.txt
@@ -208,7 +208,7 @@
 #endif
 
 #if defined(GVARS)
-  #define TR_ADJUST_GVAR               "Ändere \0  "
+  #define TR_ADJUST_GVAR               "Ändere\0   "
 #else
   #define TR_ADJUST_GVAR               "[ÄndereGV]"
 #endif
@@ -915,6 +915,7 @@
 #define TR_CALIBRATION                 "Kalibrieren"
 #define TR_SET                   	   BUTTON("Set")
 #define TR_TRAINER             		   "DSC Buchse PPM In/Out"
+#define TR_CHANS                       "Chans"
 #define TR_ANTENNAPROBLEM     		   CENTER "TX-Antennenproblem!"
 #if defined(COLORLCD)
   #define TR_MODELIDUSED               "ID used in:"
diff --git a/radio/src/translations/en.h.txt b/radio/src/translations/en.h.txt
index 5015e69eb..c3ee04f76 100644
--- a/radio/src/translations/en.h.txt
+++ b/radio/src/translations/en.h.txt
@@ -208,7 +208,7 @@
 #endif
 
 #if defined(GVARS)
-  #define TR_ADJUST_GVAR               "Adjust \0  "
+  #define TR_ADJUST_GVAR               "Adjust\0   "
 #else
   #define TR_ADJUST_GVAR               "[AdjustGV]"
 #endif
@@ -914,6 +914,7 @@
 #define TR_CALIBRATION                 "Calibration"
 #define TR_SET                         BUTTON("Set")
 #define TR_TRAINER                     "Trainer"
+#define TR_CHANS                       "Chans"
 #define TR_ANTENNAPROBLEM              CENTER "TX antenna problem!"
 #if defined(COLORLCD)
   #define TR_MODELIDUSED               "ID used in:"
diff --git a/radio/src/translations/es.h.txt b/radio/src/translations/es.h.txt
index ec4b603e6..67575c574 100644
--- a/radio/src/translations/es.h.txt
+++ b/radio/src/translations/es.h.txt
@@ -938,6 +938,7 @@
 #define TR_CALIBRATION                   "Calibration"
 #define TR_SET                 "[Ajuste]"
 #define TR_TRAINER             "Aprendiz"
+#define TR_CHANS                       "Chans"
 #define TR_ANTENNAPROBLEM      CENTER "¡Problema antena TX!"
 #define TR_MODELIDUSED         TR("ID en uso", "ID modelo en uso")
 #define TR_MODULE              "Modulo"
diff --git a/radio/src/translations/fi.h.txt b/radio/src/translations/fi.h.txt
index 60b79b0b3..1b82e339b 100644
--- a/radio/src/translations/fi.h.txt
+++ b/radio/src/translations/fi.h.txt
@@ -208,7 +208,7 @@
 #endif
 
 #if defined(GVARS)
-  #define TR_ADJUST_GVAR       "Adjust \0  "
+  #define TR_ADJUST_GVAR       "Adjust\0   "
 #else
   #define TR_ADJUST_GVAR       "[AdjustGV]"
 #endif
@@ -932,6 +932,7 @@
 #define TR_CALIBRATION                   "Calibration"
 #define TR_SET                 "[Set]"
 #define TR_TRAINER             "Trainer"
+#define TR_CHANS                       "Chans"
 #define TR_ANTENNAPROBLEM      CENTER "TX Antenna problem!"
 #define TR_MODELIDUSED         TR("ID used in:", "Receiver ID used in:")
 #define TR_MODULE              "Module"
diff --git a/radio/src/translations/fr.h.txt b/radio/src/translations/fr.h.txt
index c0b7766ac..5881df9ae 100644
--- a/radio/src/translations/fr.h.txt
+++ b/radio/src/translations/fr.h.txt
@@ -934,6 +934,7 @@
 #define TR_CALIBRATION                 "Calibration"
 #define TR_SET                         BUTTON("Déf")
 #define TR_TRAINER                     "Ecolage"
+#define TR_CHANS                       "Chans"
 #define TR_ANTENNAPROBLEM              CENTER "Antenne radio défect.!"
 #define TR_MODELIDUSED                 TR("ID affecté à :", "No de récepteur utilisé par :")
 #define TR_MODULE                      "Module"
diff --git a/radio/src/translations/it.h.txt b/radio/src/translations/it.h.txt
index 730c1ddae..646fd04ff 100644
--- a/radio/src/translations/it.h.txt
+++ b/radio/src/translations/it.h.txt
@@ -209,7 +209,7 @@
 #endif
 
 #if defined(GVARS)
-  #define TR_ADJUST_GVAR       "Regola \0     "
+  #define TR_ADJUST_GVAR       "Regola\0      "
 #else
   #define TR_ADJUST_GVAR       "[RegolaVG]\0  "
 #endif
@@ -934,6 +934,7 @@
 #define TR_CALIBRATION                    TR("Calibraz.", "Calibrazione")
 #define TR_SET                 "[Set]"
 #define TR_TRAINER             TR("Trainer", "Maestro/Allievo")
+#define TR_CHANS                       "Chans"
 #define TR_ANTENNAPROBLEM      CENTER "Problemi antenna TX!"
 #define TR_MODELIDUSED         TR("ID già usato", "ID Modello già usato")
 #define TR_MODULE              "Modulo"
diff --git a/radio/src/translations/nl.h.txt b/radio/src/translations/nl.h.txt
index 348bfd018..de69f57eb 100644
--- a/radio/src/translations/nl.h.txt
+++ b/radio/src/translations/nl.h.txt
@@ -209,7 +209,7 @@
 #endif
 
 #if defined(GVARS)
-  #define TR_ADJUST_GVAR       "Wijzig \0  "
+  #define TR_ADJUST_GVAR       "Wijzig\0   "
 #else
   #define TR_ADJUST_GVAR       "[WijzigGV]"
 #endif
@@ -920,6 +920,7 @@
 #define TR_CALIBRATION                   "Calibration"
 #define TR_SET                 "[Set]"
 #define TR_TRAINER             "Trainer Poort"
+#define TR_CHANS                       "Chans"
 #define TR_ANTENNAPROBLEM      CENTER "TX-Antenneprobleem!"
 #define TR_MODELIDUSED         TR("ID al gebruikt", "Model-ID al gebruikt")
 #define TR_MODULE              "Module-Type"
diff --git a/radio/src/translations/pl.h.txt b/radio/src/translations/pl.h.txt
index d1e15a50d..e24aff0cb 100644
--- a/radio/src/translations/pl.h.txt
+++ b/radio/src/translations/pl.h.txt
@@ -209,7 +209,7 @@
 #endif
 
 #if defined(GVARS)
-  #define TR_ADJUST_GVAR       "Ustaw \0   "
+  #define TR_ADJUST_GVAR       "Ustaw\0    "
 #else
   #define TR_ADJUST_GVAR       "[UstawZG] "
 #endif
@@ -933,6 +933,7 @@
 #define TR_CALIBRATION                   "Calibration"
 #define TR_SET                 "[Set]"
 #define TR_TRAINER             "Port Trenera"
+#define TR_CHANS                       "Chans"
 #define TR_ANTENNAPROBLEM      CENTER "Problem z anteną TX"
 #define TR_MODELIDUSED         TR("ID zajęte","ID modelu zajęte")
 #define TR_MODULE              "Moduł "
diff --git a/radio/src/translations/pt.h.txt b/radio/src/translations/pt.h.txt
index ceeea2d6b..9dcbd834f 100644
--- a/radio/src/translations/pt.h.txt
+++ b/radio/src/translations/pt.h.txt
@@ -207,9 +207,9 @@
 #endif
 
 #ifdef GVARS
-  #define TR_ADJUST_GVAR  "Ajuste\0      "
+  #define TR_ADJUST_GVAR    "Ajuste\0      "
 #else
-  #define TR_ADJUST_GVAR  "[AdjustGV]\0  "
+  #define TR_ADJUST_GVAR    "[AdjustGV]\0  "
 #endif
 
 #if defined(LUA)
@@ -923,6 +923,7 @@
 #define TR_CALIBRATION                   "Calibration"
 #define TR_SET                 "[Set]"
 #define TR_TRAINER             "Trainer"
+#define TR_CHANS                       "Chans"
 #define TR_ANTENNAPROBLEM      CENTER "TX Antenna problem!"
 #define TR_MODELIDUSED         TR("ID used in:", "Receiver ID used in:")
 #define TR_MODULE              "Module"
diff --git a/radio/src/translations/se.h.txt b/radio/src/translations/se.h.txt
index 310ed655a..269965fc8 100644
--- a/radio/src/translations/se.h.txt
+++ b/radio/src/translations/se.h.txt
@@ -933,6 +933,7 @@
 #define TR_CALIBRATION                   "Calibration"
 #define TR_SET                 "[Spara]"
 #define TR_TRAINER             "Trainer"
+#define TR_CHANS                       "Chans"
 #define TR_ANTENNAPROBLEM      CENTER "Fel på TX-antennen"
 #define TR_MODELIDUSED         TR("ID finns redan","ModellID används redan")
 #define TR_MODULE              "Modul"