Hi Everyone!  As to Mr. Roger Waring and his Duo-Art grand, there a few
things I could say:

First, suspect _all_ tubing and Hoses!  To remove the action follow
yesterday's advice from Mr. Mike Knudsen, but don't forget that all the
connector manifolds, those beneath the keybed and the one on the upper
left, have leather gaskets.  If anyone has removed them and broken the
seal, the leather should be replaced.  On the lower manifolds, some-
times the screw holes for the spring-loaded screws are stripped.  They
will have to repaired.

If the piano has an Una Corda pedal pneumatic, the spool box floats
and is not rigidly attached to the keybed like the models without the
feature.  The keybed shifts to the left bending the tubing, so it all
should be flexible.  Replace it all!

As was said before, the air motor hose is difficult to replace, but
it should be.  It gets hard and develops a set, and leaks.

All this said, I must add you might be entering into an agreement with
unseen consequences.  If you _repair_ as opposed to _restore_, in a
week, or two weeks, or a month, _something will go awry_! One note will
cipher or one won't play or one will be sluggish.  The piano action
must be _perfect_!  If not, everything will have to be taken apart
again, which takes time.  And time is .....?!

Something this old composed, of 60-year-old rubber and leather, will
develop problems requiring a call-back after delivery.  Believe me,
I know.  I do not take on work unless it a complete restoration.  I can
rely on _my_ work, but not 60-year-old work.  You will eventually lose
money.  Hope this gives you a little insight.

As an aside:  I regulated a Weber Duo-Art WR that had an interesting
spill.  Instead of the spill-hole stuffed with felt, there was an elbow
with a hose that ran around to the rear of the piano to a typical
Aeolian spring regulator with adjustable coil spring and internal
poppet valve.  It could be regulated to ON all the way to OFF.

How should this be regulated?  To what "inches of H20"?  It seems to me
that it would dampen the crash or the higher intensities, as opposed to
the static felt closure.  The interior airways are lined with thick
felt for silencing, but does not restrict the air flow.  Any
observations?

Mr. Berley A. Firmin II
baf02@gnofn.org