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Thanks for the well reasoned reply. Noise is certainly one element of the issue. Every time the surface pressure transitions from positive to neutral or negative the affected skin segments will "pop". But in addition to the noise this constant flexing will result in paint failure, smoking rivets and eventual stress cracking of the work hardened material.
Interestingly the linked thread makes the observation that maintenance manuals do not address the question of "acceptable oil-canning" because there is no such thing.
I have several other feelers out for additional input but so far there is unanimity of opinion that this is not a satisfactory condition.
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