Originally Posted by
lajt
Ahh, that's a good point about the bolt being bent. I hadn't considered that. Next time I disassemble it to clean it, I can check. Maybe hold it against a right-angle speed square? If it is bent, is it even worth trying to straighten, or just try to find a replacement bolt? Or like you said, just leave it be.
Just roll it on a flat surface, a slight wiggle should be fairly obvious. Depending on where the bend is, it might be as simple as clamping it in soft jaws and tapping with a soft-face hammer. But it's really not enough to worry about.