Just graduated to my 1st and 2nd APV'S, both arrived together just 3 days after I placed the separate orders. Both my Provari and Vamo 5 are awesome but the Kanger PT 11 that is included with the Provari has to be so loose when you screw it on the 510 treading to be able to draw a hit that it's about to fall off, where as my Vamo 5 with the same tank screws down nice and snug and I have no problem getting a nice long draw w/o the resistance. I've thought about putting a rubber gasgit on the Provari or removing one of the wicks to help improve the draw but being a tyro I thought I'd ask for other suggestions. I haven't tried other tanks on the Provari, which of course is an easy option, but since this tank came fitted for the Provari why should I have to fuss with it?