Reassembling an 86 Romy kit and I'm having a hell of a time getting the hole to line up when pressing in my barrel. The barrel is so tight that when I'm pressing it in, it jumps in about 1/8"+ increments. It will jump from about a 16th too short to about a 16th too far every time. When too short it will swallow a Nogo and when too long it will not take a go gage. All of my other builds have not had this problem. Any suggestions?