Ive got maybe 2 dozen pipes i use and no joke probably 3-4 of those came new from good brands with the tenons waaaaay too tight. Like i feel they're gonna snap off when removing the stems. Ive tried graphite Pencils and beeswax and still smoking and waiting on them to loosen up on their own but they're not getting better. Whats the best way to amend this problem? Sand the tenon or mortise? What grit? They're new $70+ pipes I dont wanna mess up but its simply unten"on"able at this point.