Posted by Chuck Jackson on November 28, 2002 at 18:32:36:
In Reply to: Cerveny CFB 651 5th valve. posted by Mark L. on November 28, 2002 at 17:47:15:
Contact Lee Stofer at tubameister1(AT)juno.com. I have the same horn, albeir under a different name(Zeiss Master). He expertly added a 5th valve. The horn is amazing with it and he does top-notch work.