More on the rolling harrier stuff: Mine does really nice, smooth rolling harriers in both directions. Before I was able to do them smoothly, though, I had to mix out KE coupling so that rudder input was true yaw and nothing else. it took lots of time, fixing one thing at a time until it was done. Now, when I feed in rudder during a rolling harrier the rudder input doesnt effect the roll rate, it just holds the nose up. Old story, I know, but mixing out coupling only makes the controls do what they're supposed to do, nothing more. If you haven't spent the hours to learn a good, long, very slow roll no amount of mixing in the world will help your rolling harriers. The UCD is a nice flying fun plane.

Best too all!
Dave