Beretta 686 Firing Pins

[PKGunsmithing]

I'm replacing the firing pins on a 686 Silver Pidgeon. The lower one was easy. However, the upper one is held in place by a pin that also holds a cam that rides against the takedown lever pins. This is difficult to re-install. Any suggestions. Beretta does not divulge proprietary info so I am on my own.

Paul Koester--