In my experience there is no such thing as a wing incidence problem. The wing flies at the incidence it needs to generate enough lift to support the plane. The only effect that changing wing incidence has, is altering the angle at which the fuselage flies and this is a presentation issue. What changing the wing incidence does is alter the engine thrustline. So the first thing you want to try is trim for straight and level and then chop the power. If it climbs there is too much downthust, if it dives there isn't enough. By all means rectify these issues by changing the wing incidence provided you are happy with the fus. flying angle, otherwise change the downthrust.

Once this issue is correct, if it pulls to the canopy on downlines at idle its a CG problem. Either move it back or if this introduces other problems such as knife edge pitching or directional instability, mix it out.

Malcolm