Posted by John Griffiths also has a signature mpc on October 07, 2001 at 13:15:31:
In Reply to: Re: Which MP for YFB-621? posted by Rommel Cordova on October 06, 2001 at 05:31:41:
You'd have to contact him (via TubaEuph list?), or contact Yamaha Canada to find out how to order it. I've heard it's got a smaller diameter cup but a large backbore.