Spent the better part of this day working on riveting all the bulkheads and floor components. Found while riveting the F-812 the tail tie down needed to be made and fit to the bulkhead. Made the tail tie down bracket and fit it to the F-812 bulkhead, preped, alodined and primed the bracket. Riveted the F-806 rear spar and floor ribs in preperation to rivet all the floor together.