I have a K1 Max which had a 502 mainboard fan exception. I changed the board which got rid of the error but putting the printer on its side seems to have put something out of alignment. While doing a self test for leveling there is a sickening noise as the head moves along the Y axis and seems to bang into the corners. I am not sure if the belts are too tight or too loose. the left and right rear wheels do allow the belt to 'walk' up and down but not in uniform. I have looked at several YouTubes but none seem to address my issue, If anyone can get me an idea of what to do I would be very grateful.