think everyone thought that measuring it was a given. even then we could be talking 1/32 of an inch.
edit: op, if it's even close resub it another time or 2. if it comes back after that, i would try to get it in a sgc slab then submit as a crossover if ya really want it in a psa holder.
it seems nice from what you have presented.
so far it's got three big things going for it:
it's authentic
it's not trimmed
it's not altered in any other way.
it would be worth the time and resources should it get in a 7 or 8 holder.
keep us updated.