I'm finding the Zeus X really easy to wick with no problem keeping up even with chain vaping. I'm running the Zeus X in single coil mode at 35watts and it's a great vape. This leads me to think it is a wicking problem if it takes long to saturate the coil with juice. When running single coil there is much less cotton. I'm using 4mm coil inner diameter so I have enough cotton to fill the deck cutouts and it's very easy to wick, and easily repeatable. I've re-wicked a few times already and tried the wick touching the bottom of the tank and just barely going past the juice openings. Both methods were equally as good vaping with no issues. So I'm thinking if yours isn't keeping up with the juice flow it is most likely too much cotton restricting the juice getting to the coil. If you are thinking about going to the single coil original Zeus, try setting the Zeus X up with a single coil first just to see if the vape improves for you. I'm very much liking the Zeus X this way and is my favorite RTA right now. Just a really good, flavorful vape that is easy to coil and wick. If you're a high wattage vaper I don't know how this will perform since I don't use it that way, but if you're a lower wattage vaper this is really good and the juice in the tank lasts a lot longer and the batteries do too.