I added a "wire keep" toprotect the plywood rib from rubbing the servo wire. I added another one in the hatch area to make sure the servo wire can't get caught on the hatch screw.

I used the supplied ball link for the aileron control horn, a 3.5" titanium turnbuckle, and a Kavan 4-40 ball link (it's an 1/8" shorter than a Dubro)for the servo arm. The key is that the servo arm is 90 degrees from the wing surface with the aileron centered when the linkage is complete. That's a great way to set up all the servos. It doesn't matter where the servo is mounted, just get the arm at 90 degrees to the wing surface. The starting point is the same for every servo that way.