I just got an lrpv. I cant seem to get the bolt to go all the way in though. It goes almost all the way in and the little black knob on the top of the bolt hits the receiver. I can push and there is some spring tension there, but I don't want to force it. It's about a half inch from getting to the point where I could turn the bolt down. I own several remington bolt guns, and honestly I'm a pretty experienced shooter, so I feel kinda dumb asking this. Any help would be appreciated