P-40 Wing Washout
The kit is designed with wash out in it and I would not recommend changing a thing. The P-40 is, quite simply, a more demanding airplane to fly than some other warbirds and I doubt there is much you can change on the TF kit to make it any easier. Rather, spend some time learning the dos and donts of flying the airplane and then stay within the airplanes' envelope. If that means getting more flying experience with a more challenging sport type airplane than that is what I would do. Sure beats tearing up your brand new P-40! Building light and straight can't hurt either. Best of luck and happy building!