Originally Posted by robkarrob

Knock the roll pin out. Clean it along with the frame holes. Tap it back in. Apply a drop of BLUE Loctite to one end, drive it back in far enough to put a drop on the other end. Drive it in flush and wipe off any excess Loctite. It should now stay in, but because it is blue Loctite, it can be driven out, should you ever need to do that. Works most of the time.

Bob