Have you had a problem with part 73, bearing base, not seating the bearing solidly? Shouldn't this bearing be press-fitted to the base? My sander, right out of the box, failed by cog belt shredding within minutes due to the misalignment of the cog belt when the bearing was able to move in the bearing base. Relacing the belt is not going to help with the allowed missalignment problem, Hence my sander's belt section is junk unless you folks tell me the bearing base should be a press-fit and I can get a new bearing base with a press-fit bearing installed.