Riveted the top skin to the spar; the new tungsten bucking bar with the angled end made light work of that! Jackie put in the last few CSK4-4 blind rivets at the inboard rib bottom surface. And we're done. Sweet. Now to build the right flap, prime both the right flap and right aileron parts, rivet 'em together and then decide whether to fit the flaps/ailerons/tips to the wings now or wait until after the fuse is built and I put everything together.