I started today by drilling the remaining pilot holes for the tip ribs. After completing the drilling I proceeded to straighten all of the tip rips. The flanges were not all 90 degrees and some of the flutes needed adjusting to make the ribs flat. After straightening all of the ribs and marking the rivet centerline I installed the tip ribs back onto the spar. The next step was to straighten all of the main ribs and attach them.
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