I just got my Aero-hawk last week. It is only a basic 4ch radio with reversing switches. It is not programable that I know of. It may be adjustable from the main circuit board.

What I would do to de-sensitize it a little is move the servo/swash plate links to an inner hole on the servo arm to reduce the throw a little. Mark down what hole position they were in from the factory, then move it in one hole. Not too much or you wont have enough control when you need it.

Another better option is to get or make a strap to hang the transmitter around your neck and hold the end of the sticks between your thumb and finger, rather than thumbs only, it usually helps for fine control without over-controlling, You could also extend or put on longer sticks on the transmitter so you have to move the sticks more for the same amount of servo movement.

Come to think of it I'll dig out my old Kraft radio and steal the long sticks off it to help me learn as soon as mine comes back. (tail motor burnt out nearly right away)