I really wanted to love this wick (I really did) after reading all the great reviews (and there were a multitude of them), however, while the scent throw was EXCELLENT (so I can't comment on the problem that you are having), there was simply unacceptable amounts of sooting and black smoke, that I wasn't getting with other wicks (eco, cotton core) using the same variables. I tried wicking down, changing the levels of FO and, nothing. This wick seems, in my testing, to soot far too much for my liking. Again, I wanted to love it, after having read all the reviews, and considering the fact that you could get about 1,000 for around $30 (great price point), however, I simply couldn't get them to work. I've not yet quite given up, but, I'm close to it.