#define NUM_EXTRUDER 1

#define Z_PROBE_Z_OFFSET 0

Note: I also tested setting up #define Z_PROBE_Y_OFFSET 25 (positive) but the printer behaves exactly the same.

#define Z_PROBE_X_OFFSET -37.3

#define Z_PROBE_Z_OFFSET 0

I have no real programming experience, and am wading into this project with only the #DEFINEs figured out.  The firmware config tool (ver. 0.91) is having issues with compiling (I think I picked the w

when i checked the setting "#define ALWAYS_CHECK_ENDSTOPS 0",  It seems that this was already set to zero....

Disable  #define ALWAYS_CHECK_ENDSTOPS 0

Wow thanks for the fast response and if it would be that easy that would be awesome.  I added #define START_STEP_WITH_HIGH 0

#define START_STEP_WITH_HIGH 0

#define EXTRUDERS 1

#define EXT0_WAIT_RETRACT_TEMP 150

#define DECOUPLING_TEST_MAX_HOLD_VARIANCE 20

2) Look for #define HOMING_FEEDRATE {50*60, 50*60, 4*60, 0} under Movement Settings

#define XAXIS_STEPS_PER_MM 80

 #define SDSS               31 // 31 http://reprap.org/wiki/Melzi#Melzi_Arduino_Pin_Numbers says 31, schamtic show pin 37 = PA0 which is arduino pin 31!

At the top of ui.h I have notice the new option of :#define DISPLAY_GAMEDUINO2 6 

#define ENDSTOP_X_BACK_ON_HOME 1

#define BAUDRATE 250000

This solved the issue described directly above...#define ENDSTOP_Z_BACK_ON_HOME 10