While replacing the stock on my 10/22, the pin that holds the magazine release and auto bolt release fell out. I didn't realize it till I had gone to the range, fired off ten rounds, and tried to eject the mag. Good thing I brought another gun to shoot... my jammomatic 9mm AR. Just checked the Ruger site. The parts diagram says I need two magazine latch pivot and ejector pins. I don't remember two going in that hole? Can anyone else confirm this?