take the dihedral out of the wing, and on the elecator, cut the tips away from the stab and make them a counterbalance to the control surfaces. also, do that on the rudder if you can. if you feel a bit adventurous and want to get rid of that self righting thing, put about 1.5-2 degrees of anhedral (wings droop) to conpensate for the pendulum effect. the harrier is a great example of that, except it has a lot more than 2 degrees of anhedral.