I used Spectrum A6030 servos for flaps, rudder, and steering in my Hawk. The A6030 is now discontinued but it is the same servo as the SA-1256TG. The servo is a drop in fit for the Hawk cutouts and screw holes which are sized for the DS8411/8711. I used brass eyelets from my JR spares bin as the Spectrum eyelets were too small for the CARF servo screws. The JR heavy duty servo arms fit the Spectrum/Savox servos. I used the JR servos for aileron and elevator. I believe they are more precise.