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John

I respectfully disagree with Don Gotez.  I have heard of several instances of trailing edges popping loose at altitude on Airplanes that did not have vent holes.  I don't think anyone has been hurt yet but I think that it could be a serious structural failure.  I would go back and drill the holes however you can.  I have also added drain holes to my control surfaces to insure that water cannot collect in them.  If water collects in a control surface it will screw up the balance of the surface.

Tom Byrnes (6 Months to Go on a Lancair IV)

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Please send your photos and drawings to marvkaye@olsusa.com.