Some progress has been made this week, the aileron servo and connection is done. I'm using push rods from Creative Models, rod ends from Hirobo and horns from Nishioka. Since the push rods' length are pre-determined - 55mm - it took a bit of cutting & measuring to ensure a correct fit.

Whenever I install servos on a plane with a one piece wing configuration, I always glue a small piece of foam inside the servo lead opening to prevent the leads from dropping back into the wing by accident.