About the plane pulling hard in knife edge toward the canopy---Looks like a goof that I made caused the problem. I set up the Vision by copying the basic program parameters from my Double Vision.....Seemed logical as the planes are virtually the same except for the wings. Of course I made modifications to the Vision program as necessary. Where I got into trouble was due to different brands of servos were used on each plane. The elevator servos on the Vision needed to be reversed as compared the the DV. I forgot to reverse the rudder to elevator mixing when I reversed the elevator servos on the Vision. The result was an extreme pull to the canopy when adding top rudder for knife edge. Problem is now fixed and we'll see how it flies on our next outing.