I'm using a Vamo right now with a Vivi Nova. It seems most of the time I can't go above 3.7v until it starts tasting a little burnt. My atomizer is 2.6 Ohm. I've tried Boba's Bounty, Gorilla juice, and Desert Ship(50/50) with it and they react mostly the same. I've heard that the voltage should be able to go up two more than the Ohms. What could be the problem here and what are some good juices to vape at a high voltage?