You didn't mention how many rounds fired this pistol has...I agree, if you have less than 1000 rounds through it, just needs some break in...However...I, myself, could not stand to single-shoot 1000 rds. I would send it back or at least call and ask about it...That's not right...If it does it when it's hot or dirty is bad enough, but single-shot?
Come on...this is supposed to be their premiere carry pistol right? Just sounds like you have more than a break in problem...If they're all like that, seems like there would have been more said...
I think you have a problem...