Take a look at http://www.charlesriverrc.org/articl...Plan%20Options

and other pages thereabouts. Drela is using music wire pushrods in plastic tubes.

The Apogee plan (v tail) puts the two horns above the t/p, mounted parallel and vertical. The wire has enough room to move to take up any parallax motion or you could think about using cup and ball connectors. Think for only a moment because you still need the parallax motion in the pushrods.

Good place for good ideas