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Goetz is absolutely, completely, dead wrong.

Vent stabilizer, control surfaces, vertical stab, everything - or expect
problems.  Climb to 18,000 feet and the internal pressure could be 7.5 psi
greater than outside.  Multiply that by the area and you will arrive at
scary numbers.  Think "boom," and then you will get the right picture.
Drill the vent hole wherever you can.  Coming in from the back works fine.
Better yet, drill two vent holes in each compartment.  I did.

Fred Moreno

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