I bought a new 09 SLG a few weeks ago and started having this problem. When the ball feeds into the chamber, the bolt jams the ball at the point right before it hits the eyes. What I do to correct it is to push the button on the back to recock the bolt. The problem is it happens constantly. I know its not the hooper because I have Halo hopper that feeds fast and I ensure that the eyes are clean and the bolt lubed real well. Also, all the o-rings are good too. Does anybody know the fix for this?