Back-drilled upper VS 410PP Hinge Bracket to VS-808PP Spar Doubler and VS-803PP Rear Spar. Final drilled #30 VS-808PP, VS-410PP, VS-411PP and VS-412PP to VS803PP Rear Spar. Drilled all VS rib to spar attach holes to #30 Clecoed VS-901 shin to VS skeleton