Were you able to resolve this? If so, how? I may have the same issue. Here's the specifics for mine, so see if we're having the same issue:

-If I try to home, or try automatic leveling, which "homes" first, the X carriage will slam into the right side (opposite side of the level switch) and grind up against the frame.
-If I use the touchscreen to move the carriage to the left, it will move the proper direction, but only to the middle (as if it thinks the far right is the center of the bed). It even indicates this on the display.