1/4 x 20 adapter plate for Celestron short tube (FS80 EQ WA)

Hello. Several years back I purchased a Celestron FS80 EQ WA (one of
the many 80mm f/5 clones). It has proven to be a great grab-and-go
scope at a very reasonable price. The only thing I don't like is the
apparently non-standard means by which the OTA attaches to the EQ
head. My Celestron short tube has two ~1 inch bolts portruding from
the underside of the OTA that are spaced about 4 inches apart. These
are inserted into two holes in the EQ head and then secured with nuts.
I'd like to mount this scope on a regular alt-az tripod with a 1/4 x
20 threaded post. Does anyone know of an adapter plate that would
allow this connection? Would tube rings solve my problem? I've
looked in the s.a.a. archives and can't seem to find a definitive
answer.

Thanks,
Bill Bensler