I would like to second Debbie Legg's advice to first time player
rebuilders.  I snapped photos and made drawings with measurements on
almost every piece.  My first complete rebuild is documented with about
400 photos.

Overkill?  Maybe, but I still wished I had taken one or two more from a
different angle.  Many of the photos were due to uncontrolled pride in my
work.  I also thought at the time that I was doing something that no one
else is doing.  I had no idea that there is an interesting group of
player enthusiasts out there.

One interesting issue that I ran into was how to recover the bellows and
reservoirs without filling with glue the dozen or more screw holes around
the edges where the cloth is glued.  Unless something is done to prevent
hot glue from filling the screw holes, you may never locate the holes
again without removing the cloth.

I make penciled templates (rubbing the edge of a lead pencil) along a
strip of wide masking tape to create an impression of hole locations and
edges of boards (for alignment).  Also, try to avoid delaying the rebuild
once you tear open an assembly.  Time has a way of making an essential
piece appear vestigial.

Larry Toto