The thing worth noting here is that all of the gear we are using that causes the "heat" issue are bottom coil clearos, horizontal coil kangers, and essentially any atty bc again, the coil is very close to the threads. I don't think it is anything to be concerned about. The reason it is heating up is because the coils are so close to the battery. That's why it's fine with Vision eGos and the likes. And yes, I am a very bad chain vaper.. But, 1.5ohm 306 attys are breaking me of that bc if I don't stop to let it rest, it will burn me. lol