I've done a few too, the last being a 7.62 on an SA receiver. I had a short chamber and finish reamed too...I worked with the existing bolt and there have been no issues, these guys were slapping stuff together. The barrel MUST come tight to begin with. Locktite doesn't count. They could have either mixed and matched parts until the found something that fit, or set the ones aside that didn't set up and do the proper job later. There's the ones that go together like magic and those that give trouble. I can sort out the problem children but not after the bolt's been damaged beyond repair by grinding through the surface or welding...a barrel that won't index is another thing all together. If that rifle had been GIVEN to me, I'd sort it out and carry on. Since you paid, it had to return to sender.

Lapping... But, it ain't grinding or welding... By the way, I too am in Canadaicon, you don't HAVE to go to the US for help.