I hate to disagree with you but when I set the incidence on my Eagle, I e-mailed Great Planes Product Support and asked for the incidence settings for both the top and bottom wing. I can't remember exactly, and I've tried looking through my old files but can't seem to find their response, but there's a 1 1/2 (don't quote me exactly on this) degree incidence difference between the top wing and the bottom wing. I would suggest contacting them and get the EXACT wing incidence before setting anything up...