Fortunately I have one flying and one in the box. I have tried the two servos in the rear for elevators, but it just adds to much weight. I also use the belcrank system from Central Hobbies, and like av8djc mentioned, pricey but a great quality product. I have the servos for the rudder pull pull and elevators mounted half way between the servo tray and tail for balance purposes. I'm running a YS(Z) 110 upfront.

It is a shame that these kits are no longer carried, all CG kits fly great.