Replica's can be clones of authentic, I've seen some amazingly convincing replicas. I'd get it checked out, either on here or w/ carol diva because honestly, I doubt your bag is the ONE non-quality bag sent out by LV, they say they don't send out less than perfect bags, and I doubt they do, especially if it's such a big flaw that an average person can spot it.
It could be just a very convincing replica.