I have a #22d with yaw problems. I set the trim before take off, but as soon as I get airborne the heli spins counterclockwise. I set the trim 50% left, heli spins clockwise on the ground, but spins counterclockwise on take off. I have the new "Z" parts on the tail. But the weirdest part is..........I get the same amount of counterclockwise spin at either setting on the trim. It takes 3/4 stick to correct it. Any suggestions? I should have also mentioned that the gear mesh is fine, I have drilled extra holes to keep the tail assembly from moving.