Rivet the main ribs to the spar and to the skins. They make a big deal about specifically which rivets to set, and then turn the whole assembly over and set some more then turn it again ........ I supose this is to ensure that there are no twists or bows in the part, but I'm not sure its entirely necessary, this match hole process pretty much ensures that things line up so long as you don't mis-drill something.I'll do the trailing edges and hardware tomorrow.
