Duaine,  I have several Ampico model A grand drawers with varying
completeness.  I can sell you a drawer or just the trackerbar.
The roll drive motors were removed before I acquired them.  They are
best described as "very unrestored".  I also have some expression
regulators and possibly some crescendo units.

I got these from a restorer in Massachusetts who was moving his shop
and "thinning out" his inventory.  He had acquired the stuff from
a technician in California in a similar situation some years ago.

Bob Hunt
Kennebunk, Maine