Today I finished riveting the inboard bottom skin on the right wing and began riveting the outboard. I thought it was going to be a bear and it would have been if I had done it the same way I did the inboard. I saw a video on youtube that really helped me out. Instead of peeling the skin back forward to aft as I had pictured it the guy peeled it back outboard to inboard. That makes it much easier to access and solved the problems I thought I was going to have accessing the middle ribs.