Just stopping to post on this strange MTL RTA. When functioning properly it gives me one of the best MTL vapes I have had. Yes every once in a while it does get gurgly for me but I have mentioned in earlier posts ways to reduce that to almost non existent. I have found this guy likes 3mm coils as it needs that extra cotton to keep from over saturating. For me it has been very important I comb my wick tails out because of the amount of cotton I need to use to keep it wicking properly also do not cut your tails at an angle they need to be flat. I fill my wicking channels up with wick and make sure it is full and securely in the wicking channel as for some reason with this tank I have had the tails pop out of the channels a couple of times so making sure it's securely in the channel is important. I cannot stress enough to make sure the cotton is fully filling that wicking channel now it does not need to be stuffed or crammed in there and should actually be nice and fluffy (again this is where combing your tails out is important) also when filling it make sure to fill it up past the kidney shaped fill ports. Remember to shut your jfc by screwing the tank down (the jfc does not work 100% on this tank but it helps) and to close off your airflow control also. Even after all of this some people report problems so I am assuming there might have been some issues with some of the tanks but I really love mine and I am picking up another.