OK, I'm baffled and trying to figure out if the issues I'm having with this new pack of Bloog cartomizers is me or the product. The first carto in the pack I opened yesterday worked perfectly, but the three I've opened since taste burned instantly regardless of what type of fluid I used.. Pg/VG mixed or 100% PG.... the results are the same. I removed them after one or two hits, let them sit and tried them the following day~ same burnt taste. I have about 6 Bloog batteries, including the new one that came with the order that included the new box of cartos. I'm experienced enough to fill correctly (use the condom and Tartyn spin methods). What could be causing this?? Any info/advice would be appreciated. In the past all Bloog cartos worked great until I RUINED them as a newbie doing dumb things like under-filling. This is maybe my 3rd pack... or 4th? This product just doesn't seem the same to me. I still have 1 unopened carto... but I don't want to touch it. I'm scared that I'm doing something wrong and I don't want to ruin my last one. I've been using that first good carto since I got the package yesterday morning without any issues. *Update, opened and tried the ast one and it too worked perfectly. Hmmmm.......