Fixed X_MAX_POS for cooling shroud

Firmware/variants/1_75mm_MK3S-EINSy10a-E3Dv6full.h

@@ -65,7 +65,7 @@
 #define MANUAL_Z_HOME_POS 0.2
 
 // Travel limits after homing
-#define X_MAX_POS 255
+#define X_MAX_POS 247
 #define X_MIN_POS 0
 #define Y_MAX_POS 212.5
 #define Y_MIN_POS -4 //orig -4