Tonight I riveted the back ribs and short middle ribs into place. The long story is that due to a calculation error early on, I drilled #30 holes in the attach angles of the nose and middle ribs so I'm going to have to put -4 rivets in instead of -3...not that big of a deal. But when I went to grab the correct length rivets, I found that I had no -4 rivets that were the correct length (4s). So rather than cut a whole bunch of rivets, I'm just going to put in an order for the correct ones.