I am using the standard pull pull on both rudder and elevator. i did mount a 1/4 square higher on the rudder servo so that the 2 servos would not interfer with each other. With this one servo the plane has good elevator power to hold harriers and elevators. Mine are mounted in the location DP recomends. If the cable every breaks the plane will be toast, i have read were some flyers are using the hitec 225 bb sevro as it very small and strong, and under 30.00 each. I can't speak on them personally for the elevator each 1/2 having its own servo..........