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Final drilled the skin to the spars and root rib
I drilled all the top skin holes with a #40 drill bit, then flipped the elevator over and only drilled part of the main spar, the whole trim spar and root rib. I marked the holes closest to the openings where the elevator attaches to the horizontal stabilizer. These holes were drilled with a #40 drill bit because they will have flat head rivets put into them. I will use my Avery 4 inch yoke to get these rivets. All of the other holes in the main spar were drilled with a #30 drill bit since they will have pop rivets put into them.
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