Coils & tank are Brand new it is not my Nic or PG. I DIY & I run 80/20 & 70/30 mix with 3mg have also run 0 Nic & tried 100% VG no help. Something is wrong with the Build of the tank appears it is not wicking no bubbles after a Vape unless I start to unscrew the the Chimney simply opening the fill top doesn't do work. NOT worth the money in my opinion. tank is heading out to the gun range