just trying out a kanga single coil with japanese cotton. they appear to have a better vape than the ones with the standard wick.i'm using a pro tank two. the problem is its turning my juice dark . apart from that its a very nice vape . anyway i bought 3 of them and just wondered if this is normal. i let it soak for 3 minutes before using it . i was using it at ten watts but have reduced it to 8 to see if that helps . i've had no dry hits . all replies appriciated.