Not that I see any flaws, but IMO there's a better chance of it coming back as a 9.6 than a 9.9 or better. I am simply basing this on historical results. I had a trusted Overstreet adviser tell me that you could send in a stack of what you believe are perfect. Some will certainly come back 9.8, but several could come back as 9.6's or even 9.4's. None will come back as a 9.9 or better. And, he's sent in thousands of books for grading. So, while not impossible, highly improbable. CGC is very meticulous and thorough, and they see things you don't.