Jim Becker wrote:If you have a full pulley width of misalignment, the small stack of shims isn't going to be enough to fix it. Take close look at the Cub-22 pictures on the TM Tractor Parts web site to see where you may be off kilter. Here are direct links to 2 pages. By the way, the shims are on the mower flywheel shaft at each end, between the mounting brackets and the pulley or flywheel.
Previous owners can do some wild things. PO of my sickle mower had a stack of several washers on that shaft. Perhaps not quite as thick as a pulley, but pretty close. Without pics, it's a shot in the dark on figuring out his problem. I agree that most likely something else is off kilter.