i have some pakistan sust and the other day i saw something written about how vials have to be identical to eachother to be considered real. so i checked mine and saw that the writing, bottom shape, and everything else is the same, but the top of them is not, every one of them is just a little bit different from the white breakline up. some taller, wider, or somehow just a little bit diff if you look real close. up to olmost a quarter inch in difference in height. however all contain exactly the same amount of product inside. are these slight vial inconsistancies enough to raise a red flag of authenticity in general? if you have stuff that you are sure is real, are they all exactly the same?