I always breathe a huge sigh of relief when I finally confrim that the fin and stab are straight.

Getting the elevators operating identically is no problem with the Smart-Fly Equalizer. With Futaba, slaving Ch8 (or Ch7, whichever is last on the Rx) off Ch2 works quite well, although it does exhibit a very tiny lag in the slaved channel. Still, separate end points, centering, direction are very handy and works well for all but the most critical applications.

One servo with a split pushrod works well if you lay the servo on its side with the servo arm in the same plane of rotation as the elevator. Otherwise, the side-to-side motion will create unequal movement.