The deck on my SS5000 was not even, after playing with adjustments to no avail I found the problem. The primary bracket (round bar) had jumped out of the holder block. A quick removal of the Allen bolt, removal of the block and a crowbar to reinstall the bracket it was solved. YouTube has good video on this common problem.
Next time this happens , remove both bearing blocks , slide the bar diagonal across the frame rails so you can slip it back into both blocks the turn it back square to the frame & bolt up the bearing blocks.
Takes about 10 minutes if you drop the deck onto some 2 x 4s so there is no weight on the bar, 15 minutes if you remove the entire deck.