I recently found and bought an unsmoked but no-name pipe at an antique store. The tenon, which is metal, is a tad too small for the mortise, so the stummel twists if you wiggle the pipe (but doesn't fully fall off). I tried rubbing a bit of beeswax on the tenon, but kinda just smeared around and didn't do much when I put the pipe together. I believe I've read somewhere that the solution to this is simply to smoke the pipe a few times, being intentional about not removing the stem during this process. In theory the briar expands when it's warmed, only to then constrict upon cooling. Is this true? Will it constrict back to its current size, or will it actually constrict further? Would love to hear thoughts and experiences on this. The stem accepts a 6mm filter, if that makes any difference. If another solution is in order, that would be great to hear too. Thanks!