diff --git a/src/gruvin9x.cpp b/src/gruvin9x.cpp
index b0fccab3e..b6f8acef2 100644
--- a/src/gruvin9x.cpp
+++ b/src/gruvin9x.cpp
@@ -280,13 +280,9 @@ void applyExpos(int16_t *anas, uint8_t phase)
       if((v<0 && ed.mode&1) || (v>=0 && ed.mode&2)) {
         cur_chn = ed.chn;
         int16_t k = ed.expo;
-        if (IS_THROTTLE(cur_chn) && g_model.thrExpo)
-          v = 2*expo((v+RESX)/2, k);
-        else
-          v = expo(v, k);
+        v = expo(v, k);
         if (ed.curve) v = applyCurve(v, ed.curve > 10 ? ed.curve + 4 : ed.curve, 0);
         v = ((int32_t)v * ed.weight) / 100;
-        if (IS_THROTTLE(cur_chn) && g_model.thrExpo) v -= RESX;
         anas[cur_chn] = v;
       }
     }
diff --git a/src/model_menus.cpp b/src/model_menus.cpp
index 8f56a2c2c..9489e7ba0 100644
--- a/src/model_menus.cpp
+++ b/src/model_menus.cpp
@@ -386,7 +386,7 @@ void EditName(uint8_t x, uint8_t y, char *name, uint8_t size, uint8_t event, boo
 void menuProcModel(uint8_t event)
 {
   lcd_outdezNAtt(7*FW,0,g_eeGeneral.currModel+1,INVERS+LEADING0,2);
-  MENU("SETUP", menuTabModel, e_Model, (g_model.protocol ? 10 : 11), {0,sizeof(g_model.name)-1,3,3,0,0,0,1,6,2,1});
+  MENU("SETUP", menuTabModel, e_Model, (g_model.protocol ? 10 : 11), {0,sizeof(g_model.name)-1,3,3,0,0,0,0,6,2,1});
 
   uint8_t  sub    = m_posVert;
   uint8_t y = 1*FH;
@@ -460,17 +460,7 @@ void menuProcModel(uint8_t event)
   if(s_pgOfs<subN) {
     lcd_puts_P(    0,    y, PSTR("T-Trim"));
     menu_lcd_onoff(PARAM_OFS, y, g_model.thrTrim, sub==subN && m_posHorz==0) ;
-    lcd_putsnAtt(PARAM_OFS+4*FW, y, PSTR("LinearExp   ")+6*g_model.thrExpo,6,(sub==subN && m_posHorz==1) ? INVERS : 0);
-    if (sub==subN && (s_editMode>0 || p1valdiff)) {
-      switch (m_posHorz) {
-        case 0:
-          CHECK_INCDEC_MODELVAR(event,g_model.thrTrim,0,1);
-          break;
-        case 1:
-          CHECK_INCDEC_MODELVAR(event,g_model.thrExpo,0,1);
-          break;
-      }
-    }
+    if (sub==subN) CHECK_INCDEC_MODELVAR(event,g_model.thrTrim,0,1);
     if((y+=FH)>7*FH) return;
   }subN++;
 
diff --git a/src/myeeprom.h b/src/myeeprom.h
index 26f654a20..2637e6d1f 100644
--- a/src/myeeprom.h
+++ b/src/myeeprom.h
@@ -235,7 +235,7 @@ typedef struct t_ModelData {
   uint8_t   thrTrim:1;            // Enable Throttle Trim
   int8_t    ppmNCH:4;
   uint8_t   trimInc:3;            // Trim Increments
-  uint8_t   thrExpo:1;            // Enable Throttle Expo
+  uint8_t   spare1:1;
   uint8_t   pulsePol:1;
   uint8_t   extendedLimits:1;
   uint8_t   extendedTrims:1;
diff --git a/src/pers.cpp b/src/pers.cpp
index c7d5e8246..77663b493 100644
--- a/src/pers.cpp
+++ b/src/pers.cpp
@@ -107,7 +107,6 @@ uint8_t Translate()
         g_model.protocol = v3->protocol;
         g_model.ppmNCH = v3->ppmNCH;
         g_model.thrTrim = v3->thrTrim;
-        g_model.thrExpo = v3->thrExpo;
         g_model.trimInc = v3->trimInc;
         g_model.pulsePol = v3->pulsePol;
         if (g_eeGeneral.myVers == EEPROM_VER_r584)