I put together a quick drawing of how I did it on my Venus II. I used an Airtronics 94731Z heavy duty coreless servo (high torque). Of course, any similar servo will work, I just happen to prefer this particular servo.

Anyway, I used the Sullivan Composite rod, http://www3.towerhobbies.com/cgi-bin...?&I=LXFV44&P=7 and a home made piece of plywood. See the below drawing. This setup, if secured properly (sand the sleeve at the hard points at formers, cut a slot the size of the sleeve or drill a hole in the former to accomodate the sleeve, then epoxy it in place at each former) is very strong and works well even up to 2 meter pattern.. so it will work on just about anything. It takes some time to do right, but it works and allows adjustment for both length and differential.

CGr