Finished rivetting all the gussets, stiffeners and arm rests. Fabricated bracket and installed between 705 and 706 bulkheads. Drilled top skins to stiffeners and bulkheads. Fit F 6111 stiffeners to baggage area. Challenging to say the least. Started fitting the steps to each side. Had to elongate the holes in the ribs and skin to get a good fit.