My Divergent has the lower wing set to 1 degree positive, the upper wing set to zero, motor at zero and stabs set to carry no trim. Up lines are perfectly straight, down lines need a very small down elevator mix. Knife edge pulls just a little bit to the canopy both directions. I would throw in a rudder/elevator mix to fix that however in level flight application of rudder yields yaw only. Overall very happy with my first pattern airplane design effort. I feel it will only get better as I learn more.