Posted by Just... on March 11, 2004 at 23:30:39:
In Reply to: bathing a rotary valve tuba posted by emh on March 11, 2004 at 20:37:03:
Flush it out with lukewarm water.  Use a garden hose.  Let a professional remove the valves if needed, then learn how to do it yourself.  That should cure most of what ails your horn!!