I bought an expensive pair of Gingher scissors many years ago, online, and when they arrived I did not like them. We never bonded, and I think they are still in my sewing room somewhere. At the time I thought I was safe ordering Ginghers, especially since I had loved some others I had used. I think there are differences in manufacturing all the time -- both planned and just machining variations. Manufacture is probably moved periodically, not only from factory to factory, but nowadays from country to country.
Based on my experience, I would advise returning the scissors. Maybe try a different brand (there are some really good competitors out there now), as it may be easier to learn to like a completely different scissors than trying to get used to a pair that isn't quite the same as the old pair.