After several attempts to clamp the hinges to the fuselage and to the bearings Kieran and I tried something different. We drilled the hinges for mounting to the spar, but not into the spar yet. Then we drilled the bearing and pushrod holes. The pushrod holes ended up being slightly different, skewed from one another, so we put one back for use in the other wing, took out a fresh one, and drilled matching the one from the first pair. This worked.

We bolted the hinges onto the spherical bearings on the hinge mounts (steel assemblies bolted onto the the rear spar) then we clamped the hinges onto the aileron spar. It's looking fairly good. We had to do some minor trimming of the bottom skin at the junction of the aileron and flap. The plywood template meets quite well along the entire span of the aileron. The tip rib seems to have been drilled with a 1/4 inch droop at the trailing edge. We will correct this later by drilling new rivet holes and/or enlarging some to a larger size where possible just prior to riveting.

There is a 2x2 stick wired onto the trailing edge of the bottom wing skin for use in lifting it out of the way while working inside the wing. We need to remove it prior to drilling the aileron hinges into the aileron spars . Then we can check the top of the wing with the wooden template and the bottom with a straight edge.