I just purchased a Kanger mini and an extra atty for it. Kanger kit came with 2 attys. The new Kanger mini is used on either an ego C twist (which I have been using for 6 months) and a new ego Winder. I have never had this issue with any other tank set ups(Kanger T 2 & 3, iclears, evo, and some others). In 3 days, I have burned through 3 attys. I usually get 3-5 weeks from an atty. I have done nothing different. What is going on? Did I just get a bad lot? Any ideas?