| 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 |
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| 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 |
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| 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 |
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| don't mis-drill something. |
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