Just finished a BUSA 1/4 Nieuport 28 and the top wing came out +3 and the bottom +1. It flys pretty good except I run out of down elevater trim! I have the down thrust the plans call for, but cannot change the wing incidence without rebuilding the wings and struts so I have decided to install positive in the stabilizer which came out about 1/2 degree negative.
How much positive do you think it would take to make it fly level?