I use a single servo with dual Sullivan Gold-N-Rods. The joiner consists of a small steel landing gear strap with a third hole drilled in the center. The center hole is fastened to a ball joint and to the servo while the two rods are fastened to the outer holes. It makes a very clean slop-free system. Iv'e used it on three different airplanes with great success.

I also use a 120 with the battery in the tail. C.G. is just aft of the aft cabane.