Which coil are you using? I've had no issues with the .5 or the RBA. I have not tried the higher resistance coils...Ouch!!! seems I started something
Cubis... no device but have the tank. Everyone seems to love the tank and I haven't been able to get through a whole tank without burning the wick. I choo choo chain puff and think it is too fast to keep juice in wick or gets too hot or something. You will find that I have a lot of troubles with a lot of tanks.