Note: To rivet the leading edge of the HS center nose rib, the cradle was assembled across two tables with a gap in between. The rivet gun could then be brough up from below to reach the nose rib rivets. Also two additional cradle templets were made and placed on each side of the center nose rib to force the skin onto the rib for riveting. End cradle templates were aligned for distance and squarness and clamped to the table. Center two tamplates were left free floating for self alignment.
