I picked up a vivi nova and started off with the 1.8ohm head, but when I tossed it on my provari I decided to check the ohm level and the 1.8 ohm head read 2.8ohm?! I decided to try the nova cause I was at a local vape shop trying some new juices with their nova tank at it had a great TH and taste. I'm letting the nova sit alittle to soak up the wick with juice. But what's with the ohm reading?