I just bought a PPS m2 and threw a set of trijicon HD night sights and I'm having some POI shift. The gun shoots about 1.5" high at 10 yards. Anyone else have this issue? I have a set of meprolights on my PPS Classic and I can drill a 3" target at 50 feet all day long. I'm beginning to wonder if the trijicon sights or the m2 were a mistake. I will say that installing the trijicon HD sights were a breeze with the set screw in the rear instead of that round spring thing in the meprolights.