<html> Hi David,             &nbs= p;  I'm having a chuckle, I discovered the same thing in a similar manner, only I was waiting for some damper felt on back order. Been doing that way for a number of years. On a rebuild I always pull, and service, the back action.  Even with screwed flanges it is a hassle getting at them, when every thing is assembled.. Another time saver: align the back action to the keys with the stack off, and no strings on the piano. Perfect unacorda every time. Regards Roger At 04:30 PM 3/5/01 -0800, you wrote: <blockquote type=cite cite>List, So I'm here in the shop finishing up a Steinway M.  I noticed a wobbly damper lever (dampers already rough regulated).  I put it off until finally I decided I couldn't leave it.  I pulled the dampers and the underlever system to  fix the problem.  Pinning was loose so I popped off the lever/flange and repinned and then reglued and clamped.  I looked at back at the piano and thought..."Hey this would be a good time to finish up the let-off!"  So I installed the action and found I was able to align the hammers, do let-off/drop, level strings and whatever I can think of.   WOW!  This is the way to do it if your rebuilding a grand.  Restring, hang your hammers rebuild action, whatever and then regulate the action with the dampers out of the way.  Install your dampers at the end of the job...this is probably common knowledge to everyone except me (and I've thought of it but never actually did it)but if anyone hasn't tried this give it a shot! David Ilvedson, RPT </blockquote> </html>