Yep, agree with K. My first time with the Eviva flooded because I didn't have enough cotton stuffed into the deck to block the channel. As for filling it's the same way on most tanks kayfun, etc. Turn upside down and allow juice to drain to bottom before fully tightening the top cap seal.
I am VERY happy with the vape I'm getting with the Eviva. The ceramic cup warms the vapor up nicely and gives very good flavor. I have not put this thing down since getting it!
With Kayfun Lite you don't need to twist/turn/flip/tinker anything ~ it has a perfectly functioning bottom fill-port. One of the USPs of this atty. And I thought EVIVA had one too (a fill-port), doesn't it?