So, I am starting my Jim Chambers FL and alrady I Have an issue. I can not get the breach plug turned in all the way. I know this because I can not get the index marks on the plug and barrel to align. The very tighest I can get them leaves the oposing index marks about an 8th of an inch apart. I do not want to force the metal and what I have read from Chuck Dixon is that the answer is to file down the breach end of the barrel so that these marks align. However, I am wondering if the index marks were put on the seperate pieces when aliged and as such indicate that the shoud be tightened down to that specification. Any words of wisdom will be apprciated. Maybe I need to call Chambers?