diff --git a/radio/src/bitmaps/320x240/default_theme/mask_trim.png b/radio/src/bitmaps/320x240/default_theme/mask_trim.png
new file mode 100644
index 000000000..f4cef34aa
Binary files /dev/null and b/radio/src/bitmaps/320x240/default_theme/mask_trim.png differ
diff --git a/radio/src/bitmaps/320x240/default_theme/mask_trim_shadow.png b/radio/src/bitmaps/320x240/default_theme/mask_trim_shadow.png
new file mode 100644
index 000000000..d8ccaa0c8
Binary files /dev/null and b/radio/src/bitmaps/320x240/default_theme/mask_trim_shadow.png differ
diff --git a/radio/src/bitmaps/480x272/default_theme/mask_trim.png b/radio/src/bitmaps/480x272/default_theme/mask_trim.png
new file mode 100644
index 000000000..a12a15c55
Binary files /dev/null and b/radio/src/bitmaps/480x272/default_theme/mask_trim.png differ
diff --git a/radio/src/bitmaps/480x272/default_theme/mask_trim_shadow.png b/radio/src/bitmaps/480x272/default_theme/mask_trim_shadow.png
new file mode 100644
index 000000000..e6310dfc4
Binary files /dev/null and b/radio/src/bitmaps/480x272/default_theme/mask_trim_shadow.png differ
diff --git a/radio/src/bitmaps/800x480/default_theme/mask_trim.png b/radio/src/bitmaps/800x480/default_theme/mask_trim.png
new file mode 100644
index 000000000..c64b9bbd5
Binary files /dev/null and b/radio/src/bitmaps/800x480/default_theme/mask_trim.png differ
diff --git a/radio/src/bitmaps/800x480/default_theme/mask_trim_shadow.png b/radio/src/bitmaps/800x480/default_theme/mask_trim_shadow.png
new file mode 100644
index 000000000..9193c3dae
Binary files /dev/null and b/radio/src/bitmaps/800x480/default_theme/mask_trim_shadow.png differ
diff --git a/radio/src/gui/colorlcd/bitmaps.cpp b/radio/src/gui/colorlcd/bitmaps.cpp
index a2a0bb3da..effdfd3c7 100644
--- a/radio/src/gui/colorlcd/bitmaps.cpp
+++ b/radio/src/gui/colorlcd/bitmaps.cpp
@@ -360,6 +360,13 @@ static const uint8_t mask_model_list_two[] = {
 #include "mask_model_list_two.lbm"
 };
 
+static const uint8_t mask_trim[] = {
+#include "mask_trim.lbm"
+};
+static const uint8_t mask_trim_shadow[] = {
+#include "mask_trim_shadow.lbm"
+};
+
 struct _BuiltinIcon {
   const uint8_t* lz4_compressed_bitmap;
 };
@@ -478,6 +485,9 @@ static const _BuiltinIcon _builtinIcons[EDGETX_ICONS_COUNT] = {
     BI(ICON_MODEL_GRID_SMALL, mask_model_grid_small),
     BI(ICON_MODEL_LIST_TWO, mask_model_list_two),
     BI(ICON_MODEL_LIST_ONE, mask_model_list_one),
+
+    BI(ICON_TRIM, mask_trim),
+    BI(ICON_TRIM_SHADOW, mask_trim_shadow),
 };
 
 static MaskBitmap* _builtinIconsDecompressed[EDGETX_ICONS_COUNT] = {0};
diff --git a/radio/src/gui/colorlcd/bitmaps.h b/radio/src/gui/colorlcd/bitmaps.h
index dc556bdd8..959596669 100644
--- a/radio/src/gui/colorlcd/bitmaps.h
+++ b/radio/src/gui/colorlcd/bitmaps.h
@@ -133,6 +133,9 @@ enum EdgeTxIcon {
   ICON_MODEL_LIST_TWO,
   ICON_MODEL_LIST_ONE,
 
+  ICON_TRIM,
+  ICON_TRIM_SHADOW,
+
   EDGETX_ICONS_COUNT
 };
 
diff --git a/radio/src/gui/colorlcd/mainview/sliders.cpp b/radio/src/gui/colorlcd/mainview/sliders.cpp
index 4359b333f..b8d36c24e 100644
--- a/radio/src/gui/colorlcd/mainview/sliders.cpp
+++ b/radio/src/gui/colorlcd/mainview/sliders.cpp
@@ -26,86 +26,41 @@
 #include "edgetx.h"
 #include "switches.h"
 
-static const lv_style_const_prop_t shadow1_props[] = {
-    // LV_STYLE_CONST_SHADOW_COLOR does not compile in GitHub ???
-    {.prop = LV_STYLE_SHADOW_COLOR, .value = {.color = {.full = 0}}},
-    LV_STYLE_CONST_SHADOW_OPA(LV_OPA_20),
-    LV_STYLE_CONST_SHADOW_OFS_X(1),
-    LV_STYLE_CONST_SHADOW_OFS_Y(1),
-    LV_STYLE_CONST_SHADOW_WIDTH(1),
-    LV_STYLE_PROP_INV,
-};
-static LV_STYLE_CONST_MULTI_INIT(shadow1_style, shadow1_props);
-
-static const lv_style_const_prop_t shadow2_props[] = {
-    // LV_STYLE_CONST_SHADOW_COLOR does not compile in GitHub ???
-    {.prop = LV_STYLE_SHADOW_COLOR, .value = {.color = {.full = 0}}},
-    LV_STYLE_CONST_SHADOW_OPA(LV_OPA_40),
-    LV_STYLE_CONST_SHADOW_OFS_X(1),
-    LV_STYLE_CONST_SHADOW_OFS_Y(1),
-    LV_STYLE_CONST_SHADOW_WIDTH(1),
-    LV_STYLE_PROP_INV,
-};
-static LV_STYLE_CONST_MULTI_INIT(shadow2_style, shadow2_props);
-
 SliderIcon::SliderIcon(Window* parent) :
-    Window(parent, rect_t{0, 0, MainViewSlider::SLIDER_ICON_SIZE + 2, MainViewSlider::SLIDER_ICON_SIZE + 2})
+    Window(parent, rect_t{0, 0, MainViewSlider::SLIDER_BAR_SIZE, MainViewSlider::SLIDER_BAR_SIZE})
 {
   setWindowFlag(NO_FOCUS);
 
-  auto shad = lv_obj_create(lvobj);
-  etx_obj_add_style(shad, shadow1_style, LV_PART_MAIN);
-  lv_obj_set_pos(shad, 1, 1);
-  lv_obj_set_size(shad, MainViewSlider::SLIDER_ICON_SIZE, MainViewSlider::SLIDER_ICON_SIZE);
+  auto icon = getBuiltinIcon(ICON_TRIM_SHADOW);
+  shadow = lv_canvas_create(lvobj);
+  lv_canvas_set_buffer(shadow, (void*)icon->data, icon->width, icon->height, LV_IMG_CF_ALPHA_8BIT);
+  etx_img_color(shadow, COLOR_THEME_PRIMARY1_INDEX);
 
-  fill = lv_obj_create(lvobj);
-  etx_obj_add_style(fill, shadow2_style, LV_PART_MAIN);
-  lv_obj_set_pos(fill, 0, 0);
-  lv_obj_set_size(fill, MainViewSlider::SLIDER_ICON_SIZE, MainViewSlider::SLIDER_ICON_SIZE);
-  etx_solid_bg(fill, COLOR_THEME_FOCUS_INDEX);
+  icon = getBuiltinIcon(ICON_TRIM);
+  mask = lv_canvas_create(lvobj);
+  lv_canvas_set_buffer(mask, (void*)icon->data, icon->width, icon->height, LV_IMG_CF_ALPHA_8BIT);
+  etx_img_color(mask, COLOR_THEME_FOCUS_INDEX);
 }
 
+std::vector<MaskBitmap*> MainViewSlider::tickMasks;
+
 MainViewSlider::MainViewSlider(Window* parent, const rect_t& rect, uint8_t idx,
                                bool isVertical) :
     Window(parent, rect), isVertical(isVertical)
 {
   potIdx = adcGetInputOffset(ADC_INPUT_FLEX) + idx;
 
-  if (isVertical) {
-    int sliderTicksCount = (height() - SLIDER_BAR_SIZE) / SLIDER_TICK_SPACING;
-    tickPoints = new lv_point_t[(sliderTicksCount + 1) * 2];
+  auto mask = getTicksMask();
 
-    lv_coord_t y = SLIDER_BAR_SIZE / 2;
-    for (uint8_t i = 0; i <= sliderTicksCount; i++) {
-      if (i == 0 || i == sliderTicksCount / 2 || i == sliderTicksCount) {
-        tickPoints[i * 2] = {PAD_TINY, y};
-        tickPoints[i * 2 + 1] = {SLIDER_ICON_SIZE, y};
-      } else {
-        tickPoints[i * 2] = {PAD_TINY + 2, y};
-        tickPoints[i * 2 + 1] = {SLIDER_ICON_SIZE - 2, y};
-      }
-      auto line = lv_line_create(lvobj);
-      etx_obj_add_style(line, styles->div_line, LV_PART_MAIN);
-      lv_line_set_points(line, &tickPoints[i * 2], 2);
-      y += SLIDER_TICK_SPACING;
-    }
-  } else {
-    int sliderTicksCount = (width() - SLIDER_BAR_SIZE) / SLIDER_TICK_SPACING;
-    tickPoints = new lv_point_t[(sliderTicksCount + 1) * 2];
+  if (mask) {
+    maskCanvas = lv_canvas_create(lvobj);
+    etx_img_color(maskCanvas, COLOR_THEME_SECONDARY1_INDEX);
+    lv_canvas_set_buffer(maskCanvas, mask->data, mask->width, mask->height, LV_IMG_CF_ALPHA_8BIT);
 
-    lv_coord_t x = SLIDER_BAR_SIZE / 2;
-    for (uint8_t i = 0; i <= sliderTicksCount; i++) {
-      if (i == 0 || i == sliderTicksCount / 2 || i == sliderTicksCount) {
-        tickPoints[i * 2] = {x, PAD_TINY};
-        tickPoints[i * 2 + 1] = {x, SLIDER_ICON_SIZE};
-      } else {
-        tickPoints[i * 2] = {x, PAD_TINY + 2};
-        tickPoints[i * 2 + 1] = {x, SLIDER_ICON_SIZE - 2};
-      }
-      auto line = lv_line_create(lvobj);
-      etx_obj_add_style(line, styles->div_line, LV_PART_MAIN);
-      lv_line_set_points(line, &tickPoints[i * 2], 2);
-      x += SLIDER_TICK_SPACING;
+    if (isVertical) {
+      lv_obj_set_pos(maskCanvas, PAD_TINY, SLIDER_BAR_SIZE / 2);
+    } else {
+      lv_obj_set_pos(maskCanvas, SLIDER_BAR_SIZE / 2, PAD_TINY);
     }
   }
 
@@ -114,12 +69,73 @@ MainViewSlider::MainViewSlider(Window* parent, const rect_t& rect, uint8_t idx,
   setPos();
 }
 
-void MainViewSlider::deleteLater(bool detach, bool trash)
+MaskBitmap* MainViewSlider::getTicksMask()
 {
-  if (!deleted()) {
-    if (tickPoints) delete tickPoints;
-    Window::deleteLater(detach, trash);
+  coord_t l, x, y, w, h;
+
+  // Mask size
+  if (isVertical) {
+    h = height() - SLIDER_BAR_SIZE + 1;
+    if ((h & 1) == 0) h += 1;
+    w = MASK_SHORT_DIM;
+  } else {
+    w = width() - SLIDER_BAR_SIZE + 1;
+    if ((w & 1) == 0) w += 1;
+    h = MASK_SHORT_DIM;
   }
+
+  for (auto mask : tickMasks) {
+    // TRACE("Found Mask %d %d",w,h);
+    if (mask->width == w && mask->height == h) return mask;
+  }
+
+  MaskBitmap* mask =(MaskBitmap*)malloc(w * h + sizeof(uint16_t) * 2);
+  if (!mask) {
+    TRACE("Could not create Slider mask");
+    return nullptr;
+  }
+
+  mask->width = w;
+  mask->height = h;
+  memset(mask->data, 0, w * h);
+
+  if (isVertical) {
+    // Create vertical mask for tick lines
+    int sliderTicksCount = h / SLIDER_TICK_SPACING;
+    y = 0;
+    for (uint8_t i = 0; i <= sliderTicksCount; i++) {
+      if (i == 0 || i == sliderTicksCount / 2 || i == sliderTicksCount) {
+        x = 0;
+        l = w;
+      } else {
+        x = PAD_TINY;
+        l = w - PAD_TINY * 2;
+      }
+      memset(&mask->data[y * w + x], 0xFF, l);
+      y += SLIDER_TICK_SPACING;
+    }
+  } else {
+    // Create horizontal mask for tick lines
+    int sliderTicksCount = w / SLIDER_TICK_SPACING;
+    x = 0;
+    for (uint8_t i = 0; i <= sliderTicksCount; i++) {
+      if (i == 0 || i == sliderTicksCount / 2 || i == sliderTicksCount) {
+        y = 0;
+        l = h;
+      } else {
+        y = PAD_TINY;
+        l = h - PAD_TINY * 2;
+      }
+      for (uint8_t n = y; n < y + l; n += 1)
+        mask->data[n * w + x] = 0xFF;
+      x += SLIDER_TICK_SPACING;
+    }
+  }
+
+  // TRACE("Created Mask %d %d",w,h);
+  tickMasks.emplace_back(mask);
+
+  return mask;
 }
 
 void MainViewSlider::setPos()
diff --git a/radio/src/gui/colorlcd/mainview/sliders.h b/radio/src/gui/colorlcd/mainview/sliders.h
index c80b339ac..4274a8c81 100644
--- a/radio/src/gui/colorlcd/mainview/sliders.h
+++ b/radio/src/gui/colorlcd/mainview/sliders.h
@@ -23,6 +23,9 @@
 
 #include "dataconstants.h"
 #include "window.h"
+#include <vector>
+
+class MaskBitmap;
 
 class SliderIcon : public Window
 {
@@ -30,7 +33,8 @@ class SliderIcon : public Window
   SliderIcon(Window* parent);
 
  protected:
-  lv_obj_t* fill = nullptr;
+  lv_obj_t* mask = nullptr;
+  lv_obj_t* shadow = nullptr;
 };
 
 class MainViewSlider : public Window
@@ -49,19 +53,22 @@ class MainViewSlider : public Window
   static LAYOUT_VAL_SCALED(SLIDER_TICK_SPACING, 4)
   static constexpr coord_t HORIZONTAL_SLIDERS_WIDTH = SLIDER_SIZE + SLIDER_BAR_SIZE;
   static constexpr coord_t VERTICAL_SLIDERS_HEIGHT = SLIDER_SIZE + SLIDER_BAR_SIZE;
+  static constexpr coord_t MASK_SHORT_DIM = SLIDER_ICON_SIZE - PAD_TINY;
+  static constexpr coord_t MASK_LONG_DIM = SLIDER_SIZE + 1;
 
  protected:
   uint8_t potIdx;
   int16_t value = 0;
   bool isVertical;
+  lv_obj_t* maskCanvas = nullptr;
   SliderIcon* sliderIcon = nullptr;
-  lv_point_t* tickPoints = nullptr;
+  static std::vector<MaskBitmap*> tickMasks;
 
   void setPos();
 
   void checkEvents() override;
 
-  void deleteLater(bool detach = true, bool trash = true) override;
+  MaskBitmap* getTicksMask();
 };
 
 class MainViewHorizontalSlider : public MainViewSlider
diff --git a/radio/src/gui/colorlcd/mainview/trims.cpp b/radio/src/gui/colorlcd/mainview/trims.cpp
index b2edde6e2..19854b6f4 100644
--- a/radio/src/gui/colorlcd/mainview/trims.cpp
+++ b/radio/src/gui/colorlcd/mainview/trims.cpp
@@ -60,17 +60,17 @@ class TrimIcon : public SliderIcon
     lv_obj_set_style_line_width(bar2, lw, LV_PART_MAIN);
     lv_line_set_points(bar2, &barPoints[2], 2);
 
-    etx_bg_color(fill, COLOR_THEME_ACTIVE_INDEX, LV_STATE_USER_1);
+    etx_img_color(mask, COLOR_THEME_ACTIVE_INDEX, LV_STATE_USER_1);
   }
 
   void setState(int value)
   {
     if (value < TRIM_MIN || value > TRIM_MAX) {
-      lv_obj_add_state(fill, LV_STATE_USER_1);
+      lv_obj_add_state(mask, LV_STATE_USER_1);
       lv_obj_add_state(bar1, LV_STATE_USER_1);
       lv_obj_add_state(bar2, LV_STATE_USER_1);
     } else {
-      lv_obj_clear_state(fill, LV_STATE_USER_1);
+      lv_obj_clear_state(mask, LV_STATE_USER_1);
       lv_obj_clear_state(bar1, LV_STATE_USER_1);
       lv_obj_clear_state(bar2, LV_STATE_USER_1);
     }