i am very intent upon disassembling my bolt to the point where i can remove the firing pin, as i am interested in avoiding unintentional firing from my cosmoline gummed-up pin and channel. my problem is that i cannot get the retaining pin to come out. i thought it might be the cosmoline causing it to stick, but i've tapped on it hard enough, that i don't think that is the problem. does the firing pin need to be in a certain position before the retaining pin can be removed? is there something else i am overlooking?