Put a few flights on mine. Harriers and elevators had very little wing rock. Knife edge spins and knife edge elevators no problem. Very tight inverted flat spins. Rolling harriers super easy. Quite a bit of pull to belly on knife edge as well as a lot of down(UP) for level invert flight....which leads to this question. Am I nose heavy b/c of so much down(UP) needed for inverted flight??? or tail heavy b/c of the large amount of pull to belly in knife edge???? or something else.. FYI: No elevator trim was needed for level flight and when throttle chopped from full plane flies straight and level forever! Thanks