I have seen/owned/serviced several different varieties of Baldwin
stacks, but I have not encountered one with the continuous strip of
pouch leather found in my latest subject.  Are these common?  Anyone
who's experienced these have any tips for replacement?

In particular, how to get use enough glue for an airtight and sound
mechanical bond between pouches, without getting any on the small
working surface.  This may be a common arrangement, but it's new to me
and I can't find reference to it anywhere.  I plan on doing some trials
a couple of different ways, but first I thought I'd tap the vast
resources here.

Here are the pianos features for the record, in case anyone is keeping
track.  It is a Modello piano, dated 1917 from the Baldwin "other"
brands vertical list in the Baldwin service manual, but I have had some
discrepancies working from these lists for non "Baldwin" branded
products of theirs.  It has a 4-point, inverted motor, the simplest
"frameless" transmission (as opposed to the pot-metal shrapnel one
or the stamped one.)  The pump is floor-mounted, with a single hinged
reservoir, but otherwise looks exactly like the keybed mounted one.
No "extra" features expression features as found on the upper Baldwin
brands.

I'll describe the pouches for those not familiar, and send a picture
if anyone's interested.  The stack is 2-tier, closely spaced, which is
why it seems the extra travel afforded by these rectangular pouches
were necessary.  Did they ever use round pouches in the 2-tier stacks?
It's possible all the ones I've had apart have been 3-tier.

The pouch boards are similar to other Baldwins, with a small round
well of less than 1" diameter drilled in the usual spot.  There is
a thin vertical saw kerf between pouch wells, and about a 1/8" rabbet
on the top and bottom of the pouch board.

The pouches are continuous strips of about .012" tan pouch leather,
and are glued top and bottom to the rabbetted ledge, and glued left
and right only within the kerf.  It looks like the leather was driven
in originally with a thin but necessarily dull piece of metal.  With
no glue on the flat, the pouch excursion starts within the well, and
ends further above the wood surface than a typical pouch would.

Another question on this instrument:

There is a knife valve on the transmission for the rewind accelerator.
This valve has two unconnected ports, switching between closed on Play
to atmosphere on Rewind.  The stack cutout is mechanical in the supply
trunk.  One port is tubed to the accelerator in the governor, the other
is tee'd into the sustain pedal line, between the "automatic sustain"
switch and the tracker bar.

If this is tubed correctly, it would appear to simply leave the pedal
"full on" during rewind only if the switch is set to "auto", with the
only purpose to break the vacuum of the sustain hole on rewind.  Was
there ever a now-missing cutout valve here, or is this the way it was
intended?

The tracker gets its supply from the main stack trunk, and is already
defeated on rewind.  The pedal pneumatic itself is tubed directly to
the pump and has no cutout mechanism.

David V. Anderson, RPT
Waukesha, Wisconsin