diff --git a/libs/display/EInkDisplay/src/EInkDisplay.cpp b/libs/display/EInkDisplay/src/EInkDisplay.cpp
index 4661113..6e06a9a 100644
--- a/libs/display/EInkDisplay/src/EInkDisplay.cpp
+++ b/libs/display/EInkDisplay/src/EInkDisplay.cpp
@@ -125,7 +125,40 @@ const uint8_t lut_x3_wb_full[] PROGMEM = {
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
 const uint8_t lut_x3_bb_full[] PROGMEM = {
-    0x00, 0x06, 0x02, 0x06, 0x06, 0x01, 0x00, 0x05, 0x01, 0x00, 0x00, 0x01, 0x00, 0x00,
+    0x10, 0x06, 0x02, 0x06, 0x06, 0x01, 0x00, 0x05, 0x01, 0x00, 0x00, 0x01, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
+
+// X3 dedicated grayscale LUTs — tuned drive strengths for 4-level gray
+// All entries share the same single-phase timing so the controller scans
+// every row with consistent gate timing. Source voltages differ per transition:
+//   VCOM: GND (stable common electrode reference)
+//   BB:   GND (active hold — prevents floating source crosstalk)
+//   WW:   brief VDL pulse (dark gray)
+//   BW:   moderate VDL pulse (light gray)
+//   WB:   GND (active hold — unused transition)
+const uint8_t lut_x3_vcom_gray[] PROGMEM = {
+    0x00, 0x03, 0x02, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
+const uint8_t lut_x3_ww_gray[] PROGMEM = {
+    // Dark gray: VS=0x20 → GND,VDL(2),GND,GND — brief pulse (sub-phase B)
+    0x20, 0x03, 0x02, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
+const uint8_t lut_x3_bw_gray[] PROGMEM = {
+    // Light gray: VS=0x80 → VDL(3),GND,GND,GND — subtle pulse (sub-phase A, TP0=3)
+    0x80, 0x03, 0x02, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
+const uint8_t lut_x3_wb_gray[] PROGMEM = {
+    // Active GND hold: VS=0x00 → all GND, matching timing
+    0x00, 0x03, 0x02, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
+const uint8_t lut_x3_bb_gray[] PROGMEM = {
+    // Active GND hold: VS=0x00 → all GND, matching timing
+    0x00, 0x03, 0x02, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
 
@@ -1014,14 +1047,14 @@ void EInkDisplay::displayGrayBuffer(const bool turnOffScreen) {
       }
     };
 
-    const uint8_t* vcom = lut_x3_vcom_full;
-    const uint8_t* ww = lut_x3_ww_full;
-    const uint8_t* bw = lut_x3_bw_full;
-    const uint8_t* wb = lut_x3_wb_full;
-    const uint8_t* bb = lut_x3_bb_full;
+    const uint8_t* vcom = lut_x3_vcom_gray;
+    const uint8_t* ww = lut_x3_ww_gray;
+    const uint8_t* bw = lut_x3_bw_gray;
+    const uint8_t* wb = lut_x3_wb_gray;
+    const uint8_t* bb = lut_x3_bb_gray;
     uint8_t dataInterval0 = 0x29;
     uint8_t dataInterval1 = 0x07;
-    if (Serial) Serial.printf("[%lu]   X3_GRAY_MODE=full29\n", millis());
+    if (Serial) Serial.printf("[%lu]   X3_GRAY_MODE=gray_tuned\n", millis());
     sendCommandDataX3(0x20, vcom, 42);
     sendCommandDataX3(0x21, ww, 42);
     sendCommandDataX3(0x22, bw, 42);