Hi Bill,

No I didn't design the canalizer. I got it from CA. I think I still have one. It reduces around half the mixing since makes the rudder more sensitive. When you got the Gadious? I got my second one August 2012.

In regard the Abbra with ZDZ. The plane was almost destroy by vibration and flutter. I convinced my friend to order a Hyde mount. We did and the change was incredible. I saw the plane flying like 1/2 dozen times. My friend decided to sell it and I never saw it again. I was able to fly all Abbras with electric, glow (2C and 4C) and gas. Performance between electric and glow was not much (YS160). The gasoline was having problems in the vertical square 8 that we flew in that time. It was more than 1 lb more that is huge difference too. Great experience flying the Abbra in the last 12 years.