my question for you is why are you using prog mix 6(set up for a point curve) for flap/spoileron? why not just use a linear mix? if you did that then any of the others will work. just pick any two of them and set the mas to "elev" and slav to "flap" set the switch for both these mixes to "c" and the position up for one and down for the other. if you want a non linear mix for both then what abou prog mix 7 (probly being used for rudder to aileron)