I bought a bolt mod about a week ago. They sold me an 18650 battery with it, I tried to put in the bt in my car and it seemed too big so I brought it back in and they more less forced it on. It worked great... For about a day. Then I felt it start to get very hot. That shouldn't happen. Come to find out its supposed to take an 18500, I brought it back, tried the 18500 in the store and it worked. I got home and now it doesn't work unless the tank that's on it is only very partially threaded on. Anyone have any thoughts? I'm assuming a possible misfire, but not sure.