Export, try some .035 welding wire. But you need to have a thin tube to run it through, like the tube that holds the ink in ball point pens. other wise the wire will just bend. You can set it up as a pul-pull system. Use two opposing control horns, and some light weight fishing line and use a servo arm that has two ends. ( I can't think of the name for that kind of servo arm,,,, duh, drawing blank) .