Cleco the VS-808PP spar doubler to the VS-803PP rear spar. Then cleco on the hinge brackets VS-410PP, VS-411 PP and VS-412PP Prepare the ribs VS-704, VS-705, VS-706 and VS-707 Cleco the ribs to the front and rear spars. Final drill #30 VS-808PP, VS-410PP, VS-411PP and VS 412PP to VS-803PP. Drill all rib to spar attach holes to #30. Cleco on the VS-801PP / VS-901 skin. Disassemble, de-burr, dimple, machine countersink and prime parts