I have a Futaba 6EXA radio -- no split elevator mix and if you try to use the programmable mix it will work
Jpal101: He mentioned he has the 6exa which doesn't offer aileator mixing.
So with hitec digitals as you say, you have a couple of options... You can either buy a the hitec programmer to reverse it then use a Y harness. Or buy a reversing Y harness for the other servo. And Last get the futaba [link=http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXCTS1&P=7]servo syncronizer[/link]