I'm confused... What is the specific hardware you’re using?

Moving the servo will have little to no effect on the actual throw realized by the elevator surface. Changing the control link length will have no effect either.

No matter your doing, aileron, rudder or elevator the control arm pivot point should be located over the hinge center line (this is where the linkage attaches to the control arm pivot) or as close as possible. Otherwise you'll get uneven non linear travel.

The things that do affect the throw are;

Servo arm length
Control arm pivot point length, from hinge line to pivot point
Servo travel arc or rotation from center to end-point
ATV, AFR or travel volume of the TX