Posted by Tom B. on August 12, 2001 at 22:55:50:
In Reply to: Re: Vavle Guides posted by Michael Eastep on August 12, 2001 at 22:46:54:
Interesting you refer to the plastic guides on the CB-50. I just bought a CB-50 and it is my first piston horn aside from school sousaphones which have metal valve guides, which is one of the reasons I posted this question.