I have a fairly new G20sf that I'm quite fond of, however it almost always jams at least once going through a clip of 15 rounds. The jam consists of failing to pick up the next round from the clip. The fired round is ejected and the next round begins to lift from the clip and the slide actually smashes it in the middle of the case - doesn't pick it up at the rim, but appears to miss and catches the shell halfway. This leaves a nasty dent in the round. This occurs with both the stock recoil spring and Wolff 20# spring. I'm a very experienced shooter and believe I've got a firm hold (i.e. not limp-wristing it). Any thoughts?