Gary,
Have you checked wing and stab incidences? Don't accept the factory settings. Start with things verified true then go from there. Also make sure ailerons and elevators track true
On pitch couple, did you mean % rather than degrees? 7 to 10 degrees down is huge. If the model pitches up with top right hence needing that much down ele, you may want to reduce incidence of the left panel about .2 degrees. Assuming that the plane has wing adjusters of course.
you want calm conditions for better eval.
Stab and wing incidences are good. Stab at roughly 0* to level the elevator, wings are set to 1*. Trying to wrap my head around changing the left wing incidence to cure a right rudder pull to canopy makes my head hurt...lol