As
@stuartd mentioned as well I have played about with mine for about 3 weeks now. That piece of card that comes with it which depicts cotton coming out of the juice holes is fecking useless. I put it down so I can just see it a little bit maybe only half way down max ( I got this from a Youtube Video). Im on it now with
@puffinclouds which is max vg juice and no problems, chain vaping away. If you get any problems let me know, i will find the video or send you a pick of my wicking... Safe Vaping