RE: B400: Limiting Tail Servo Throw???
Wolfpackin,
If you have to give it right rudder control to keep the the heli straight and forward. Move the tail servo up closer to the main frame.
Move it up about 2 mm test fly. Keep doing this until you have the trim lever on the TX center and don't have to input any right rudder with the stick.
Dave / Choppersrule