Posted by Andy Cattanach on March 28, 2001 at 17:19:01:
I've just recieved a PT84 mouthpiece that's far too small to fit any of my tubas. There is no marking on the shank, but it's way smaller than any of the dimensions given for shank sizes,even the XS and AM(?) models. (the shank of this one is 13.5mm!). Has anybody any ideas? they aren't too easy to get hold of in the UK!