When my 12 year old went to fly his Nexstar (he soloed on the first flight) I would not let him use any of the supplied crutches. I unhooked the flight stabalization device and removed the wing extensions. I told him he can learn the right way or not at all. For the stabalization device to work properly the sun has to be at a certain angle to the ground, because it works off of sunlight. Sorry but a p-51 is not considered a second plane or even a third plane.