I made this on my alunar prusa i3 and had a problem with the belt. The old setup had the belt being held a the bottom of the x-carriage, when this one has the belt being held on top. It switched the direction of my x axis. The motor is set to spin clockwise to bring the carriage back toward the endstop switch on the left, but now since its being held on the top instead of the bottom it wants to head right instead of left. Did anyone else have this problem or am I missing something?