<HTML>I've read most of the books but this is a new one on m= e.  Several keys (probably 12 or so) in the midrange can't be depressed= .  The inside of the hammer "tail" sticks against the back of the wippe= n.  So the hammer is incapable of rising unless you pull the hammer up = with your hand. Being a relative newbie as a piano tech, I'm wondering what the fix is.&nbsp= ; Take a file and file the back of the wippen?  Take a Dremel tool and = sand off part of the hammer so it doesn't rub?  Reglue the offending ha= mmers, making the shanks 1/64 longer?  Just curious to know if any of you "Been there, done that, got the T-shirts"= have seen this before? Toodles, Charles Cron Rockfield, KY</HTML>