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extra ribs for high horsepower ac

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Joined
Jun 16, 2013
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Fargo, ND
I have this really strong memory that I read a recommendation to install extra ribs in the propwash area for 6 cyl Bolts. Now that I'm ready to start building the second lower wing I can't find the comment.
Does anyone else remember seeing that comment? Anyone remember where they saw it?

Thanks
 

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