I "roll" a cotton wick, just enough to fill the coil but easily pass thru the coil, trim it to lay down the sides of the well and rest loosely on the bottom, but not covering the "intake" holes. Use 1.8 ohms at 3.7v. Once I got the wicking right, I still got dry hits at the beginning of the tank. This was because I was trying to fill it too full. I find that I need to leave a pretty big bubble when refilling or it doesn't feed properly. Now it feeds and wicks great every time.
If I get that burning taste because I tried to fill it too full, I find that the original mouthpiece helps it to feed properly...probably creates more sucking with the smaller hole and tighter draw. Once the juice level goes down a little, I can swap out for the wider bore drip tip that I prefer for a looser draw.