Posted by Non-do it yourselfer on February 05, 2001 at 10:42:44:
In Reply to: Help posted by Heavy pistons on February 05, 2001 at 09:09:31:
Clean the valve thoroughly first before resorting to drastic measures like lapping. Lapping valves (if that is indeed what needs to be done) is best done by a professional repairman. We would all hate to see your ruin your expensive new tuba.