HI GOINSTRAIGHTUP! I use the stuff called SPIDERLINE that's sold as fishing tackle. I run a full loop of it from one side of a hardwood dowel control horn, through the outer holes on the servo arm, and back to the other side of the control horn, and tie it off with a "movers knot". I notch the servo arm on either side of the hold down screw, so I can trap the line under the screw head, and so the line has zero chance of jumping out from under the screw head. This set up is easier than messy with cable.