Nice work. I've never seen anybody do this. That was very interesting. Bottom line is that the ARF designer needs to do it right in a CAD package and tell us what to use to get it right. Of course there are imperfections in our installations such as gluing in phenolic horns slightly crooked, rudder horn rod holes drilled crooked. Or from the ARF mfg, the slots were cut imperfect. ARF fuses can be assembled and glued crooked, rudder hinges drilled crooked. I don't mind a little slack away from center. I use my rudder a lot in 3D and precision flying.

Thanks for posting this. It was VERY interesting and useful.