Dual-servo elevator linkage geometry
MM,
I am not starting at the wrong points, The green lines in the picture represent the "Arc" that the pushrod would create if it were only attached at the elevator. I did not draw the pushrod so you could (hopefully) see that the two servo horns were aligned (the red dot indicates where the pushrod would connect and it is perfectly parrallel to the elevator). And yes, the throws ARE exaggerated for clarity, but I intended to show that the more you travel, the worse the problem gets.
Andy's original question was:
"What is the best way to setup dual-servo elevator halves?"
IMO the "best way" is a servo reverser and both servo arms either up, or down.