RE: Impact
I picked up some foam boards from Ed Skorepa (a.k.a. EScomposites of carbon-fiber pipes fame), and decided to use it as material for a brace for the Impact fusealge. I ran a couple of 1/8 sq longerons to the stab former to hold in place during gluing. I then keyed the board into the rudder and mix-carb servos' tray.
Between the rudder change and this "ladder" I can only hope we have it licked!
Eric.