Okay. MAJOR flaw in this tank design...
When you rotate the top open to refill the tank there is a rubber gasket that is friction fit in place. It works fine for awhile but if it slips down even a little bit when it is closed, opening the tank to refill again will rip it and stretch it out so it can't be used anymore. I have just replaced it for a third time in three days. Each time it has happened I was refilling the tank. Lasts maybe 2 refills before it messes up. I am effectively SOL with no vape until I can get it replaced.
When I replace the gasket I clean out the well with a q tip and firmly press it in there. The lid closes easily and nothing is getting caught. Never had any issues with closing it. But something is happening while it's all closed up that the gasket is slipping down and jamming it from being opened without ripping it apart.
The other SMOK tanks have this same gasket but it's not on the lid, it is on the tank part. After a couple months it gets messed up too.. but it's long intervals. This new design is not working apparently.. Maybe i will try some knock off gaskets and see if those work any better.