I start at a low V, moving my way up slowly. I haven't used a vivi above 4.6v. I found a nice spot at 4.5v the day I got it, but since then it's been completely inconsistent. I bought 3, so I've tried it on both the Provari and ZMax, and at times they have both been very very good, but now I can't get either to taste right. I've tried a 2.4Ω and the 2.8Ω. I've been using 60/40 juice, and some other juice from altcig that I don't know the ratio to. It doesn't tell me what it is on their website or the bottle. But its a rather dark thick juice. So both a light and thin juice, and a dark thick juice. I definitely tilt. I wonder if maybe I tilt too much, so I let it sit for a while but nothing changes. I tried trimming the wicks a little. Hmm. That's about all the info I've got, I think.