Let me ask you this.......I had a problem today. Well, 2 problems. Everything was going great. I decided to add more juice to the tank and when I started vaping, it flooded badly. I decided to ignore the company's wicking recommendation and rewicked with longer tails. Then a second thing happened. After rewicking I start to fill the tank and the juice just won't go in, meaning it spitbacks. I filled slowly (70 vg) and still no go. I tilted it, put it on it's side, stood it straight up....nothing. Then I used a syringe to get in deeper. I hear a popping sound and blurp! A stream of juice pours down the side of the tank. This has never happened to me before. I assume a BIG air bubble formed inside and cause an air lock. My only assumption is that there is very little space between the air chamber and the glass and it locked up. What to do, what to do? I love how this vapes and I want to keep using it but not if I have to wrestle with it. On a positive note, the rewicking seems to be working out fine....so far.