Posted by Daniel C. Oberloh on July 02, 1999 at 00:59:06:
In Reply to: Old Conn tuba posted by Ralph W. Taylor on June 29, 1999 at 10:26:57:
Over the years I have delt with this problem many times in my repair shop. Bolth with old Yorks and Conn tubas. I normaly rebuild the valve set first, the old valves are usuly very leaky and this causes the player to conpensate for the bad tone and intonation which makes it worse. if the instrument is flat still, I will dismantel the master slide and recut the tubes on a metal lathe(much neater then a hack saw)the slides are then reassembled. If it is sharp I make extension tubes for the master slide. In many such cases I have also manufactured new mouth pipes to deal with the issue. I rarely have this work aplied to three valve models.