Start working back on the wing with aluminum rivets through top skin. Received Garmin Pitot tube today, will install pitot plumbing after turning wing over, before bottom skin is attached. Alignment is easily assisted by reaching under the structure to apply pressure to ribs in desired direction, still need to chase ream a few holes but very minor material removed. Memories of Dad who passed 16 years ago tomorrow.....he never flew but loved airplanes, he'd enjoy watching this project.