A little more detail would be helpful.
What kind of
juice are you using?
What PG/VG ratio?
What power/temperature settings?
When are they happening?
When the
tank is nearly empty?
Has it been laying on it's side, or upside-down?
After you change the coil?
After you've chain-vaped a few hits?
Help us out, so we can help you out.
I've been using this tank with the 0.4 ohm SS coils, 80/20
juice, @ 55 watts as my every day vape for nearly 6 months, and I haven't had any issues.