My friend and I both got 3ml vivi nova tanks with the three various ohms heads. Im using a segelei z max and he has a provari. He's a vape vet and im a rookie but we're both getting burnt wick taste. I've used the wattage chart on this site and still no sucsess. Our hardware camefrom a pretty reputable supplier. Anyone know what couldbe causing this bbecause this is my 3rd vivi and I've had no problems with my others.