Extremely slight proverse coupling. So minor you can fly it pole-to-pole knife edge with rudder only, and the wing only rolls about 10 degrees or so. 1% mix is too much, so I left it alone. Basically, I guess the answer is no, it doesn't roll couple in knife edge.

Except inverted, it DOES roll couple slightly proverse when a lot of rudder is used inverted, like coming out of the bottom of a 2 of 4 triangle in a strong crosswind. None that I am aware of upright. I checked this afternoon. I wonder what would make it roll couple inverted, but nowhere else? Even in the top of a stall turn, with full rudder deflection, it rotates fairly flat. Could it be the sweep of the leading edge, or somthing more insidious?

Oddly enough, I find it needs less mix the more I fly it. As of today, I have 4% mix on the rudder to elevator and that's ALL, I increased it from 3 and removed everything else. I'm really not sure if it's just me subconsciously correcting or what. Like today, it was dead perfect in every attitude, except for the forementioned roll couple inverted. I'm beginning to think power setting and a 17.5" prop are playing a huge part. I'm flying a tad faster in the wind. Not screaming, but not as slow as usual. More constant I'd say. I think that's a good thing.

-Mike