slight config tweak

Marlin/Configuration.h

 #endif
 
 // Add a menu item to move between bed corners for manual bed adjustment
-//#define LEVEL_BED_CORNERS
+#define LEVEL_BED_CORNERS
 
 #if ENABLED(LEVEL_BED_CORNERS)
   #define LEVEL_CORNERS_INSET_LFRB { 30, 30, 30, 30 } // (mm) Left, Front, Right, Back insets
   #define LEVEL_CORNERS_HEIGHT      0.0   // (mm) Z height of nozzle at leveling points
   #define LEVEL_CORNERS_Z_HOP       4.0   // (mm) Z height of nozzle between leveling points
-  //#define LEVEL_CENTER_TOO              // Move to the center after the last corner
+  #define LEVEL_CENTER_TOO              // Move to the center after the last corner
 #endif
 
 /**
 #define PREHEAT_1_LABEL       "PLA"
 #define PREHEAT_1_TEMP_HOTEND 185
 #define PREHEAT_1_TEMP_BED     45
-#define PREHEAT_1_FAN_SPEED   255 // Value from 0 to 255
+#define PREHEAT_1_FAN_SPEED     0 // Value from 0 to 255
 
-#define PREHEAT_2_LABEL       "ABS"
-#define PREHEAT_2_TEMP_HOTEND 240
-#define PREHEAT_2_TEMP_BED      0
-#define PREHEAT_2_FAN_SPEED   255 // Value from 0 to 255
+#define PREHEAT_2_LABEL       "PETG"
+#define PREHEAT_2_TEMP_HOTEND 220
+#define PREHEAT_2_TEMP_BED     70
+#define PREHEAT_2_FAN_SPEED     0 // Value from 0 to 255
 
 /**
  * Nozzle Park