Probably still needs some break-in. Another thing you can try is to bend the magazine lips SLIGHTY, either apart or together and see if that helps. Sometimes it does, sometimes it doesn't and sometimes it makes it worse. Test it first by hand cycling the action with live ammo, but be carefull. Slowly let the slide closed and watch the round as it strips from the clip into the chamber. Another thing, don't let those mags drop like they do in the movies, if it lands on the lips they will bend, and then you end up with feeding problems. I'm not saying that mags are the only thing that could be causing it, but it has in my experience been the most common.