ORIGINAL: Rcpilet
I saw a guy do something similar to this on an US 1000.
He had built a pocket in the control surface and lined it with formica (cabinet top). It was a very snug fit for a piece of piano wire. He bent an angle on the piano wire and then hooked the piano wire directly to the servo.
The piano wire slid inside the pocket in the control surface, and because it had a bend in the end--rotating it via the servo output shaft caused the control surfaces to move.
It was a very slick setup, and he had no exposed control linkages. It was all buried inside the plane.
Needless to say--the plane wasn't very draggy.
That is an adaptation of the RADS system that has been around the glider world for several years. Seems to work very well. Slop free, neat and clean.