The airplane folders are stored in the fms directory. Open the corresponding folder for the plane you want to edit and there should be an .inf folder (I think this is right, I'm at work right now and don't have the folders in front of me), double click the .inf folder and it will open in notepad. The control surfaces are listed, lower the number for less control and increase the number for more control. It is kind of a random trial and error, you will have to play with it until you get the response you want. If this isn't right, post again and I will give you directions from home where I can see the folders.