RE: Inverted flight, how quick should it fall?
Todd,
What is the engine thrust line? With 0.75 incidence, I suggest that the T/L should be -0.25 to + 0.5. If you are too much negative could cause that probem. Also the plane could be too much nose heavy. I am sure that you already took care of the CG.
Good luck,
Vicente "Vince" Bortone