So I got the Kbox mod with the Subtank plus mostly just bc it went so well together. I have a Sony VTC4 battery and everything seemed good except..... I am getting zero airflow out of it. Everything fires but I can't do a lung or mouth hit at all.... not even a little. I tried all three coils and nothing..... I eventually started checking everything starting with the drip tip and then the chimney and air flows great. Got some ejuice in my mouth a little but even individually checked each coil and the air flow is fine. The issue is once I attach it to the base it turns in to a big crap sandwich and I got zero pull on it. The airflow ring adjusts properly and clicks into place but when I tried to pull air from the top coil side it does nothing...... I have watched every video and been in every forum and I have not seen this issue except when ppl clog it from rebuilding or cleaning but mine is brand new out the box and verified through Kangertech...... Any ideas????