I just bought a new XDs 4.0 in 9mm. With 200 rounds thru it roughly 10% will eject straight back into my face and a few have gone down inside my shirt (ouch). They don't go up and then down, but go straight back. This isn't conducive to pinpoint accuracy. Otherwise it works just fine. I don't limp wrist my PM9 so I believe it's something else. I've also cleaned it every 50 rounds and put on quite a bit of lube (I've read the forums). Does anyone have any thoughts on possible correction?