I'm finding they are leaving the back of my throat scratchy. I was using some pre-made 1.2 ohm coils and took them out and saw the coils black up after one day and when rinsing noticed black particles coming loose. Am I inhaling those? Is that the problem? I ended up putting in stock coils. Wanted to add that I was running the pre-made coils at 12 watts if that makes a difference I don't know.
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