Mounted aileron hinges. Traced out wheel well ribs from LH wing onto card stock. Transferred tracing to plywood and cut out ribs and rib sections. Reused the steel framing studs from the spar table to be used as a 10' long straightedge. Used this straightedge to confirm contours of new ribs and to check on the existing ribs. Cut out rib stiffeners for the new ribs and steamed a few sections to permit them to fit the curve of the ribs.