Actually, I know now that you are correct ....

If you look carefully, the "coupling" control arm on the servo wheels is not anchored on the right-hand servo. It looks like it just slides through the "ezi-link". The other two links are non-slipping ball-joints. This is what lead me to the idea of the flap-mixed elevator. It also makes the dual-elevator process a non-binding one. Quite neat. I was mislead by the servo's being at different places though, but when in use they will move in tandem.

The classified description confirms the giant-scale servos are the two 134's on elevator. I initially did not get a good impression of how big this plane actually is (none of the pictures have a good scale reference). It is a 114" wingspan plane which is almost 12' It's huge. Makes the "standard" size servos look like minis...

gus