Drilled two missing holes in upper VS-410PP. Drilled remaining holes using doubler as a drill guide. Prepared VS-704, VS-705, VS-706 & VS-707 ribs. Clecoed ribs to front and rear spars. De-vinyled spar doubler and final drilled VS-808PP, VS-410PP, VS-411PP & VS-412PP to VS-803PP. Drilled all rib to spar attach holes to #30.