I heard a lot about extraction issues with new Glocks with "dipped" extractors. My G17, made in the early 2011 (RZZXXX) has one. So far I had mainly shot Federal Champion 115 gr FMJs - a weak plinking round. With about 350 rds through the gun, I figured I got about 5-8 "brass to the forehead" issues. None to the face... yet. I didn't shoot enough of more powerful rounds to get an issue. So, do I have a problem ?