I will fly mine at 6" first, I expect a tail low attitude as you get slow, and start pitching up to maintain altitude that is perfectly normal, but I just don't like it like that even at speed, just doesn't look right. I thought I read somewhere that the coupling was real bad on the UCD in general, and that moving the CG aft helped that as well as spins and snaps, I guess it's the other way, Maybe the reason people are complaining about the coupling, is because we all have the CG so far out of the recommended range ?