Level flight requires slight right hand turn input

[B2C2]

I will definitely check the Robertson manual for that aileron setting. 1/4 inch of upward deflection on the right aileron would probably fix most of whats going on. I have the manual but its currently at the shop with the plane and log books. In regard to the flap suggestion I have looked pretty carefully at the flap positions and they seem to be even on both sides.