MJM, all my bipes, including two Phaeton 90's, all flew best after I set the upper wing at a minus 1.5 degrees relative to the lower wing. If you can experiment on that a bit, I'll bet you find it flys much nicer with that positive incidence out of the top wing. They also all liked about 3 degrees right thrust and 3 to 5 degrees down thrust. The same set up also worked best on seven Airomasters and three Lazy Aces I've built and flown.