Help grading proofs! Franklins and Washingtons

I need some help. I'm still learning about grading so I thought I'd see if anyone here can help me on this one.
My question is how do milk spots affect grades?
My question is how do milk spots affect grades?
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"Senorita HepKitty"
"I want a real cool Kitty from Hepcat City, to stay in step with me" - Bill Carter
Glen
Sorry the pictures stink. All I have is my scanner at the moment.
Click here for some information on grading proof coinage.
On that '63 half, I'm not convinced that's milk-spotting. It may be water spots. The difference is that milk spotting happens at the mint and is embedded in the planchet, so it can't be removed.
That amount of spotting, though, will kill the grade on the coin.
Edit: Unless NGC is a LOT more lenient than PCGS, those spots were not on the coin when it was slabbed.
Russ, NCNE
Thanks for everyone's comments!