So, let's say it was your book - something super-hot like Walking Dead 1. You call in and are informed it was just graded a 9.8, and on the way to encapsulation. At this point you are seeing dollar signs everywhere you look, because this is big bucks we are now talking about.
But then later you call back in after encapsulation, and are informed it is now a 9.4 or 9.6 instead of the 9.8 you were originially told. So rather than be perceived as whining or crying your heart out, you'd just shrug and say, "Oh well - happens" without any complaint?
#1 They won't give out grades anymore in the "graded but not encapsulated" phase.
#2 I take pictures of my books---if they come back damaged you'll bet I'll be putting a phone call to them.
P.S. CGC has in fact damaged books DURING encapsulation and promptly called me and made good on the grade differential. I'm not sure if they do that these days.