I own a recently purchased new pt-92. I've had it for about a month now. Prior to today I had put 200 rounds through it. At the range I started having problems after about 100 rounds. At first I just thought some of the cheap rounds were failing to fire, no big deal. But after two or three rounds, eventually 4 or 5 IN A ROW were failing to fire. I checked the rounds and they all had strikes right in the middle of the primer. Eventually I just gave up because more than half of the rounds were failing to fire. I even tried switching ammo, but no difference. Any suggestions on what the problem is and what I need to do would be greatly appreciated.