While my Dad and I were at the range tearing up targets with my XD. He also brought a Jennings model nine. the pistol shot fine for the first 40 rounds or so, then a couple of FTE and then the red firing pin indicator came out the back about 3 times farther than normal and stayed there. Anyone have this pistol and had similar problem? Anyone have an idea what went wrong? If so is it a gunsmith fix or something I can do? we are thinking firing pin spring maybe or the pin itself??Any help is greatly appreciated.