New member here with a technical problem. This is my first 308 build but far from my first ar platform build. The problem is that the bolt won't go fully into battery reliablely, sometimes the round will even get stuck partially into the chamber but angled to the right side of the bolt. This happens when cycling and when releasing the bolt. I did some troubleshooting and I'm fairly convinced it has something to do with the bolt. At first I thought it could be the buffer spring but when I swapped the bcg out with one from a friends rifle it cycled perfect. Parts list. Aero precision upper and lower receivers, charging handle, lpk, and nickel boron bcg. DEZ arms 20" rifle length match barrel. JP silent buffer. Any help would be greatly appreciated.