Brought the bottom back out and riveted the longerons in place. Did not rivet the two lines aft where the bulkheads go. Did not rivet the most forward row either. Also did not rivet the area where the flap motor will go including the two rivets there in the longerons. Make sure the gusstes overlap on top of the longeron...I initially had mine screwed up and had to remove e afew rivets to correct.
