Hi Peter, my Wingstabi is in a powered model, what you have to bear in mind is that the Wingstabi programming is for the controls which use the gyros, e.g. ailerons, elevator, rudder and flaps, if used in conjunction with the ailerons. So the programming for these has to be in the Wingstabi.
Anything which is just passed through, e.g. engines, landing gear, spoilers etc can be set at transmitter with only channel assignment in the Wingstabi.