I don't know if I'm doing something wrong or just got some bad atomizers, but I've had some issues lately. I bought a new joye 510 and it worked great for a day or so, until I put a fresh battery in my silver bullet then all of a sudden every hit tasted burnt. this has never happened before so I figured I got a bad atomizer. I took it back to the store, they looked it over and confirmed it was bad. their policy is they do not do returned on atomizers but they did sell me a new one at cost. then the same thing happened again. I don't know whats happening here. I'm not using it any different and can typically get several charges out of the same one. now I've had two go bad after changing batteries. has anyone else had this issue? is there anything I can do to prevent it?