I have a Viva Nova tank on a Provri I have to screw all the way down. Witch makes it flush with the top no air flow. The positive pin on the tank is almost flush can you unscrew the post out. Dident try it yet don't know if it will break it it's new
it's a knock off.
vision vivi nova's have a couple small red marks in the V on the box.
i have a provari and nova tanks, they work fine.
knock offs do what you described.
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