I agree 100%. There have been some discussions lately implying that adverse yaw would reverse itself when inverted. That is not the case. If it were...you would have to reverse the rudder as the plane rolled inverted. I am using my full scale aerobatic experience to back up my conclusions. All I was trying to say is that adverse yaw, (the reason for aileron diff) does not reverse inverted. There is a different amount of diff needed when inverted, but there is a different amount of diff needed in ALL other phases of flight, except where the diff was set.

Bryan