So I picked up a Saiga, and after I got home I was messing with the gas regulator and the detent got stuck in. Any Ideas on how to free it? I gave it a few good whacks, several "push it in and let it spring out" and I drove the crosspin part of the way out to see if it would loosen, but I'm afraid to drive it all the way out and have the pin come shooting out.

Any other suggestions?