I just got an order of Boge cartos, and I noticed a difference in these from what I've gotten before. My old cartos had "510 SS REG" stamped on the package, while the new ones I received have "510 SR" stamped on them. Has Boge changed their stamps, or are these not actually Boge cartos? They look identical, but the first one I tried doesn't really vape as well as I'm used to. I haven't tried a second yet, and it could just be a quality control issue. But I wanted to check on this before I started opening up more in case I need to return them. I also ordered from a different seller than I usually do this time, so I'm wondering if they may be trying to sell imitations and claiming they're Boge.