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Good thing to know. Thanks.

Veddy intadesting, Joe. I've had problems with my 2nd valve sticking since I bought my tuba. I've had various guys work on the valves. They always work great after the repair work, but after a few days, mostly the 2nd valve starts to hang up. It drives me up the wall. What would cause this dirt build up leading to the valve hanging up, if this is the case, on mostly the 2nd valve? I never had the problem with any other tubas I've owned.