Dimpled last few holes in each rib by placing dimple die sets on hole and squeezed them together using 2 pair of vise grips. Placed trailing edge in between boards and pressed down on it. Then used C-clamps to tighten boards together. Finally have a proper bend. Squeezed the ends of the flanges of 404 rib closer together so that rib doesn't push skin out. Trimmed edges of rudder horn brace so that it fits better against rib and is not in the way of the 5th hole on the rib for riveting.
