mgft1500,
I found it! I called Duane Roach today and he told me he sold his business to Tom Jones, of Jones Equipment. The shop is located at 403 Burrell Avenue, Freeport, Ohio 43973. The phone number is (740) 658-3862. Freeport is in the south east corner of the state near Cambridge. I called the shop and confirmed this information but was told that Jones Equipment is a tractor sales and repair shop and they do Model A engines as time permits. Their tractor customers come first. I was told that they have 4 or 5 "A" engines waiting their turn. I asked if it was alright for me to put this info on Ford Barn and was told it's O.K.
Now you know everything I know.
Good Luck
Marty