RE: Adding flaps to a Sig 4-Star 60
If you have a computer radio you don't need any flaps on a FourStar 60. I put differential ailerons on mine and it landed so slow that I could almost catch it. If you do anything put around 20 percent reverse differential ailerons on it. It will act just like spoilers and you will still have the full ailerons for control. You can land at a faster speed and make nicer landings without bouncing.