The instructions say to start at the center ribs and work outward, But it seemed to us it would be better to rivet all the rivets along the wing spar, first.
The instructions never mension anything about the rivets along the spar; they only say to rivet the skins to the ribs, starting from the center.
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The 0.5 hours was the time to remove all the screws and bolts for the tank, per my comment on the previous page. I set the rivets on one side with a squeezer. On the other side I will need help.
Tank on, and skins going on!
Rivets at the wing spar, first. Screws are at the fuel tank.
