Hi Don,
I'm sorry, I don't know the answer to your questions, (I have a pretty good guess, but rather than make a fool of myself........), I bet if you tried posting your inquiry on one of the two Stearman sites that have forum boards I know of, someone might be able to help.
One of them,
http://groups.yahoo.com/group/Stearman/, is even hosted by one of our very own WIXers, Roger Cain.
The other is, of course, the Stearman Restorers Association website,
http://www.stearman.net/
Again, both have forums that will probably get you the answer. If you have any interest in the Stearman at all, I would suggest joining both groups.
Good luck!
Steve
