The pin in front of the trigger guard, right underneath the pivot point to take the barrel off, is walking out. I took the gun out of the safe tonight to get something behind it and saw it. I haven't shot it in months. It is very far out. Pushing it with my finger doesn't move it. How'd this happen and should I just tap it back in? As you are looking down the sights the pin is all the way out to the left.