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				| Getting ready to drill platenut screw holes in the rib
 The instructions say to use the T-408 cover plate to drill the screw holes into the rib, making sure the flat end of the plate cover aligns with the stiffener bead. I assume that they mean the vertical indention in the front part of the rib. To help with the alignment I put the T-407 reinforcement ring on top of the T-408 cover plate and drew a sharpie line on the cover plate. This should help line things up better for drilling the screw holes.
 
 
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