Quote Originally Posted by Former11B View Post
Shims would work better than a crush washer (always a no go) but the trick for direct thread cans is Teflon tape. I prefer the dark gray kind that’s for oily environments because 1) it’s darker in color and 2) it’s thicker and holds up better. Two passes around the threads and the can is held on nice and snug and no carbon lockup occurs. When it’s time to remove the can, just unscrew like normal and a gun cleaning toothbrush or a 9mm/.45 cal bore brush scrapes the threads clean for a new application of Teflon tape
Hmm, I wonder if that would be helpful even with thread taper lock / mounts.