Hi I have the Spitfire by Dynam and the control rods attach to the control horns with the same equipment and the same manner that you have. What I did was to install clevis in the control horn with the nuts loose. I then put the control rods through and tightened the screw to the control rods and tightened the nuts up. i then checked to make sure the rudder and elevator stab were centered with the servos and radio controls. I then loosened up the clevis control horn nuts up a tad and applied lock tight blue and retightened the nuts up.

The Dynam TX I got with the plane has places to hook up a buddy cord, BUT no toggle switch to use for a buddy system.

Hope that helps