Does anyone have any experience with the constant speed controller from Airmaster that can handle the above props or even the Sensenich? It's expensive, but it seems like an excellent product, and it would end the never ending fight to optimize pitch control. It's a true constant speed as well, so no messing with pitch control due to accel or decel. I'm considering it for my next project, just haven't decided on a Kitfox or Highlander yet. Each has their strengths, but they overlap so much anyway. Both great planes that can be rated at 1500 - 1550 gross if desired. The Sport Plane licensing would be thrown out the window with the Airmaster anyway.