at airshows I see aileron rolls where the plane rotates perfectly about the axis of the fuselage, as opposed to a barrel-type roll. I have tried and tried to imitate this in my -6A, but my friend flying behind me says that there is always some deviation, that it isn't a perfect rotation about the fuselage axis. it seems to me the issue is lift as the plane starts rotation. I tried rolls watching and holding zero G's throughout, but I was told that didn't fix it. others have said the wing incidence is working against me, that acro planes have 0? wings. are there RV pilots out there that can tell me how to do this? it is quite deceiving from the pilot's seat what is truly occurring.