bkemper619...I still don't know what you'r after. If you are more comfortable with formulas more power to you and don't let anything I mention discourage you. It apears to me that if you understand what is needed that you can sketch it out, and from that make up any formula you need. A little geometry and some trig and you can come up with whatever formula you want to play with. Most of us just set the servo and horn at neutral, cut the rod, and play with the adjustments till it looks OK.