Dissassembled tail cone and all components. Removed center side skins. Removed center floor section. Re-clecoed the center section spar to forward floor board skin. Countersunk holes in floor board skin to center section spar for dimpled bottom skins 826-1 and 826-7. Removed L/H and R/H forward skins and re-clecoed underlying stiffeners and plates and longerons.