Wanted: Ampico model A Manual.

[abcomatic]

I folks, I need to make a few adjustments on the Ampico A in my Marshall and Wendell grand piano. If I had the manual, then it would tell me what I need to do. The piano was built in 1927 so it has the last update with the A model before they went to the B model awhile later.
Thanks for any help that you may have, Gary