I use rayon exclusively in all my tanks and drippers and I was having problems with my V2 always being wet at the bottom. I was using the juice control closed to fill and all the way open to vape since my juice is 70 vg. I tried using it half way closed to vape and still had the same problem to the point that I stopped using it for a while. I decided to try using it with the juice control open only 1 1/2 turns and for the last 2 days it has stayed dry and I'm not getting any dry hits. I still hate the juice control, but at least now I can enjoy vaping my Cthulhu again.