Was using this mod, and it was working beautifully. Vaping completely dry everytime. Yesterday, my vape went from great, to unbelievably horrid! The taste turned completely plastic/chemical/burnt! It was scary, and no matter what I did, I couldn't rid my atty of it! It was horrible. I hadn't been washing my blue foam fillers at all, and that was the 4th or 5th day I was using the same carts with the same blue foam, I now think this may have had something to do with it. So I have to suggest that everyone wash out the foam before use. After a few uses, you should either change or wash out the blue foam. At least that's what I have gathered after reading this thread and my own experiences...