If you want to resubmit the card, I think you have to crack it. Think this through. Do you think a TPG is going to review its own slabbed card, and admit it originally made an egregious mistake? A card going from a 5 to a 7 is an egregious error. I’m not saying it never happens, but I do not like the odds.
The easiest thing is for the TPG to do is collect your money, look at the slab for five seconds, and affirm the original grade. I’m not saying you don’t have a chance, but, if I were you, I would crack the card and resubmit it raw. Good luck.
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