I actually deliberately unbalanced(laterally)my Do to see if that would stop it from pulling to the left in harriers,added more weight to the right wing tip,it didnt change anything,in fact it didnt even need any ail trim to my surprise. I can turn it but it needs max rudder momentarily and often. I,m dealing with it and it does a nice rolling harrier circle to the left without trying to turn,going the other way is harder,requires pushing down-elev when the wings are almost in KE. I can turn it as it is but makes it on the edge of a snap. Guess that's what 3-D is,always on the edge. I still take my Do along with the other planes,it was a little windy last weekend but I managed to get DOD a few times in hovers and harriers,it really moved fast with the wind,cant imagine a tail touch like that,it would cart-wheel.