I recently took a leap for a vintage Committee on Ebay, however, the second valve appears frozen. I figure if nothing else I can use it for parts, however I'd really prefer to have it restored. It doesn't look like any trauma caused the damage, and just froze from lack of use. My question is, can a repair shop fix this, and how time consuming is the process? The extent of my damage experience so far has just been crushed bells, etc, and one incident where there was a dent in the 2nd valve slide, causing the valve to stick. Thanks for your help.