I think they would only deduct in extreme cases, OR if you are dealing in super high grade water.
So maybe a 9.6 would end up a 9.4.
But you know - I recall seeing a 9.6 with a fairly significant production crease that was posted here a while ago - so who knows?
I would say, though, that a production crease is very easy to identify as a production defect, and while I agree with your assessment of the defects on your books, I am not 100% sure, and any time there is doubt like that, it makes me nervous.