It seems Provape has done something new with their Provari's. I received my Provari V2.5 a month ago and the tank I use is the Kanger Pro Tank 2. Alot of people are saying that these aren't 100% compatible for the simple reason that it will gurgle and spit due to the air vents not being enough on the Provari. This however hasn't been the case with my Provari I received. My Provari has vents on the cap and this seems to have sorted out any gurgle and spitting issues with my Pro Tank 2. The Pro Tank 2 sits tight on my Provari and there is no need to loosen it a bit for airflow. It draws better than a cigarette with more vape :-)
I can say though that the release of these vented Provari's aren't consistent because I ordered another Provari for my fiance after my one and it doesn't have the vents like mine, her one is definitely struggling with gurgle and spit as she has the Pro Tank 2 and no vents like mine on her Provari. She has to loosen the tank a bit to get good airflow. I have taken her Tank and put it on mine and visa versa and it never spits with me but does with her.
Any thoughts on this and have you seen the vented Provari cap?
Below is an image of the difference.