Hello I have an Canon AE-1 Program that I was doing some maintenance on. The issue is that the SL lever (A-L-S) doesn't fully rotate now. I have spinned it around for a good while now, but I still can't manage to seat it properly so that I can turn the lever in those 3 different positions, also when I screw the top cover back on, SL lever becomes so hard to turn that it's almost frightening, like it will snap in any moment. Any tips?
