Trying to think through this one because there are so many things it could be... First, I must ask if you moved the 130mm by repertoire or by printer buttons. 2nd are you sure the cube stayed 30x30, there was no accidental clicks or scaling while slicing? 3rd I saw you say you checked the belts and print head doesn't move... Do that include making sure there is no play in the print head mount. Ie belt belt might be tight, but when it moves right, the slide to one side, then the other when it comes back. 4th is there anything in the slicing software that is adding an m92 to your gcode?