Coming up on 2 weeks of solid searching, websites, forums, smoke shops, and I'm very close to giving up and writing 0 star reviews for lack of customer support from Kamry everywhere possible. I bought a 5 pack of Ce4/ce5 coils and when I screw them in, they fit fine, the wick will get saturated but nothing vaporizes when I engage it. Perhaps it's not compatible with 1.8 ohm coils? However, I ordered another 5 pack of 2.4 ohm coils. Maybe they will work. But in the mean time if anyone can tell me they know where exactly to get coils that will for sure work with the Kamry K300, please point me in that direction.