<ul>[*]I built the kit and had to add rudder for a nice grooved turn.[*]I added a hatch on top b/c I beleive the kithad it as one unit and I justlike to have easy access to the tank area.[*]I flew mine on a .40 and it was plenty of power.[*]Other than that it was indestrucible in kit form. I'm talking cartwheels not hurting it. Not sure about the ARFs.[/list]