Clecoed E-705 root Rib to E-702 and final drilled Clecoed and final drilled E-606 to E-705 Drilled the E-701 skin to the understructure Dimpled E-713 for the screw heads that will attach the counterweight Machine countersunk the counterweight for the dimples Machine countersunk the top flange of E-606 to accept the dimples Machine countersunk for rivets that will attach E-705 to E-606 Machine countersunk the E-705 attach holes on the forward face of E-702