Posted by Scott Norberg on July 10, 2002 at 11:00:31:
In Reply to: Adding a 5th valve to an Alex F posted by Jeff Baker on July 09, 2002 at 21:18:31:
I seem to remember reading somewhere that the Miraphone 180 F has a bore size of .689, or 17.5 cm. I can't help you with your other problem, though.
Scott