I make the drivers myself. It's basically 2 servo arms bolted back-to-back with a spacer between. The outward facing servo arm is then screwed to a circuit board standoff with some epoxy around the threads of the screw. The spacer center is drilled out so that the spacer fits around the screw head that is screwed into the circuit board standoff. The other end of that standoff is drilled and tapped for set screws and a stainless steel welding rod is inserted and the set screws tightened. The outer end of the welding rod is bent (at the point where it exits the wing) at appoximately 32 degrees and this portion fits into a pocket in the aileron. The pocket is made of circuit board material (or G-10). The aileron is relieved to accept the pocket. To order the parts, go to www.irfmachineworks.com. You can get everything but the servos. These pics are of a rotary aileron driver I made for my .60 size Corsair a couple of years ago. Notice that the outer part of the rod connector is made of G10. On the Zeke, I used the back-to-back servo arms in lieu of the G-10 outer portion of the connector. It takes much less work using the latter method.