There is another problem with Provaris, the air slots on the center mount, are too small. This does not help with air flow. If you have a tank that fits tight on the Provari, it cuts off air flow. Main reason I use a Hippo on my Provari. I was having tight air flow with my Phiniac tanks. And trust me you don't just push up on a Phiniac tank, you have to work at it. I can adjust the air flow with my Hippo to whatever works.
My Zmax V3, has much larger air slots in the head. Must easier air flow.
You bought a clone. Match up where the air holes are on you Provari when the tank is tightened down, and slot the bottom of the tank. It doesn't take much slotting to increase the air flow.
When I was using Ego Twist, and got those top caps, I would tightened it down, mark the cap and slot it. Worked great. I never used to buy pre-slotted caps, because the slots in the cap, never lined up with the slots in the battery.
edited. I just looked on Dragonflys, and that recessed area around the carto makes the airflow worse. Just slot the bottom with a small file to the depth of that recessed ares, and you should be good to go.
Greg W.