Gotta disagree with you, Jim.

The Ultimate Pitts, properly set up, has as little roll coupling as my Extra, and that's not very much. I'm only talking about models in this case, though. Having an Ultimate Pitts, Extra 230, Extra 300, Pitts, and Christen Eagle (Pilot Models), and had (2) Skybolts and an Edge, I have a pretty fair basis for comparisons.

I'm thinking that a few modifications to the flight surfaces to make them more useful for 3D, something that was never even thought of when they were designed, could make for a real interesting biplane. Tom's idea of the "Double Edge" is a good one, I think, but it does have, IMO, a little problem with visuals.

Anyway, since I already have another Ultimate Pitts fuselage framed up, I'm really considering building the other wing set I have here just to see how it would work out with the modifications. The construction would be no big deal, just finding the time.