Well, I just picked up my Manurhin PP. It is in great shape. One problem though. It is missing the firing pin. I called the dealer and they said to send it back and they would replace it. With shipping and another FFL fee it would cost more than twice as much as replacing the pin myself. Numrich shows four types of pins ( flat, round, late style round and early style round ).What would I look for on the slide to tell which to use? I couldn't take a close enough picture to show the slide details. The frame serial # is 423xx but the slide is mismatched. Thank you for any info that might help.