Hello guys,
check the site of Bob Pastorello, here a GREAT explaination of how to setup dual elevator servos. He speaks about JR 10x radio, but you don't have to look at the radio programming details - try to figure out the concept.
http://www.rcaerobats.net/DualElev.htm
IMHO the most important aspects often overlooked are:
- how to use subtrims
- control rod geometry
For those more interested in that important area, check also this great tutorial by Troy Newman, a GREAT pattern pilot:
http://www.centralhobbies.com/instru...s1/link03.html
For those even more interested

, check all Troy articles about linkages by going there:
http://www.centralhobbies.com/instru...s1/link01.html
Let us know if the throws are still different !