I'd like to wax eloquent about a couple of things in your pictures.

I noticed that you have threaded ends on both ends of the connecting rods. Both clevis are threaded and free to move right?

Neither clevis can unscrew/screw because they're trapped by the horns BUT........ the rod can do whatever it wants, and just might. I landed a big 4Star the other day with the connecting rod on one aileron dangling in the breeze. So was the aileron. The rod had screwed itself deeper into one clevis and unscrewed from the other. The plane's owner had forgotten to tighten the lock nuts on the rod. The other aileron connector was almost out as well. Wonder what it'd flown like with both ailerons unhooked?

If I were you, I'd epoxy one clevis to it's rod. You've got way more than enough adjustment on one end.

Just a suggestion.