I'm using Repetier host and i was able to solve my X axis grinding issue by changing the bed size in the Repetier host software. Now the issue i'm having is the nozzel goes all the way down touching the print bed the light on the sensor usually lights up before it touches the print bed now it just goes straight to the print bed kissing it, doesn't comes back up to level it self like it's suppose to i set the nozzel to -1.2 using the Arduino software but the 3d printer ignores the setting that say #define Z_PROBE_OFFSET_FROM_EXTRUDER.