<!doctype html public "-//w3c//dtd html 4.0 transitional//en"> <html> <body bgcolor="#FFFFFF"> Have you checked the cut-off/rewind valve and pneumatic?  This unit activates when the system is thrown into rewind.  There is typically a small pallet valve activated somewhere on the transmission.  If it is not adjusted properly or is leaking it can cause big problems.  Essentially it cuts off the suction pressure to the stack and by-passes the windmoter governor for rewinding the roll quickly and without playing it backwards at the same time.  If it is stuck in the "on" position that would explain why it is not playing.  The stack is not getting suction from the pump.  This could really be a stumper if you are not experienced in this sort of thing. Rob Goodale, RPT     Roy Ulrich wrote: <blockquote TYPE=CITE> Is there anyone with solid player piano knowledge that is anywhere near NE Minnesota that would collaborate on a Monarch player? I have re-strung this instrument; I have rebuilt the stack etc., but it STILL doesn't work and my customer is on the verge of putting a little piece of lead in my left ear. Maybe I can't see the forest for the trees. I get the stack to work on the bench, had it working in the piano in the shop, but alas....obviously I'm doing something wrong.</blockquote> </body> </html>