Lou,
I think I came across that plane in the other thread that you mentioned. I like the form of it... nice.

I'm going to try something bizarre. I have a Bridi Brown B-2 (aka "Miss Los Angeles" ) which was a Golden Age racer. It has a fiberglass fuse, so I'm locked into the airfoil shape, at least at the root where it fairs into the fuse. If I'm right, the upper camber is very similar to a Clark-Y.

I'm designing a built-up wing for the plane, and am going to try to go from this Clark-Y at the root to a S8036 at the tip (with washout). On another thread, I found out that the stock airfoil might be prone to tip stalling at slow speeds (as on landing).

Wish me luck...

Bob