I've never heard of the legit item being underfilled. Possible you could have a fake. I beleive the newer Norma Deca's have a silk screened "Norma Hellas S.A." on the vial.
Even the fakes worked though right? I thought they were just underdosed and made in Turkey. Some have questioned the serility of them though. Any expiriences? All I've ever had were the real ones.
I got normas from a VERY credible source a couple of years ago. They were all a little underfilled, but they still kicked ass. I checked online about it, and at the time everybody was saying the same thing- that they are usually slightly underfilled.