This is a shot of the control set up. I put a pair of Robart surface deflection things on elev. and flap at 2" from the hinge line and found that up had 1 to 1 travel and down had 1 to 5/8 travel elev. to flap. So I changed it . I wanted to bring the pushrod clevis' closer to the hinge line so I made this flap horn from copper sheet. I bent it around a 4-40 bolt using a vise and vise grips. I drilled holes and with the T.L. A.R. method I installed the horn on the flap bolt with a lock nut. Control movement is closer to 1 to 1 now. I can change it if I feel the need. But what do I know.