Of course, only four days before a party the toy is misbehaving.  The
hammer lift pneumatic on my 1925 Steinway Duo-Art XR is staying on all
the time and I'm having trouble locating the pneumatic.  It is only
mentioned, but not located, in the available literature.  My piano has
the hammer lift instead of the key shift.  I'll also check out the
modify switch for broken tubes.

Thanks, John McClure