I have a Ruger MK III Long Rifle pistol. I field-stripped it for the first time yesterday for cleaning. I was careful to follow the instructions in the manual. When I reassembled it, the bolt had trouble sliding back in. When I finished the reassembly, all LOOKED good, but the bold would only go back maybe an inch and stopped. The trigger moves smoothly (no pressure), and the safety is stuck in the F position...won't move. I tried to field-strip it again, but the bolt will not come out, stopping again at the same position. What can I do to fix this problem (short of sending it in to Ruger)? Thank you.