Dimpled right wing skin then riveted top skin to right wing. It is really amazing how all the rivet holes line up and the rivets drop in the dimples perfectly. My helper had to go before we could finish up the wing so I started getting the parts together to assemble the ailerons. I found the Vans had sent 2 mislabeled ribs incorrectly labeled as "right" when in fact they were "left". So I will get 2 ordered on Monday. No biggie as I will get the rest of the parts ready to prime until the parts arrive.