Originally Posted by
highpitch
Nylon/Delrin guides are cheap, and an easy DIY.
DDG
I replaced the brass guides with nylon ones: easier than expected. Thanks for the suggestions, in fact the epoxy resin applied to the brass guides worked well, but over time it tended to peel off and needed to be reapplied after a few extractions-reinserting the pistons.
2007 Besson Prestige 2052, 3D+ K&G mouthpiece; JP373 baritone, 4B modified K&G mouthpiece; Bach 42GO trombone, T4C K&G mouthpiece; 1973 Besson New Standard 3 compensated valves, 3D+ K&G modified mouthpiece; Wessex French C tuba, 3D+ K&G modified mouthpiece.