I just addressed this question in another thread. Here is the link.

Fixing the servos/line problem on Aerobird

Oh, and just for technical correctness, the control surfaces on a v-tail plane such as the Aerobird are called rudervators (rudder/elevator)

Elevons are elevator/ailerons - like a flying wing uses.

Its just a nit, but what the heck. Might as well have the right terms..