I am just finishing my Ultimate and only made a few mods. The first of the mods was to change the bottom wing into a 2 servo setup. I did this because I did not like the idea of 2 torque rods and then 2 more linkages going up to the top wing. Sounded like a great combination for flutter. My second mod was to add a Pull-Pull setup for the rudder (Yet to be installed). Finally, I changed to tailwheel to a Ohio RC type (Can use a sullivan also). I did this because I have never liked the hinge type tail wheel setup.

I also put an O.S. .70 Surpass II up front
Cowl is from Stans Fibertech

Phil (Mesa, AZ)