So I bought my first APV after a good amount of research. I have a 10650 battery in my SID.. A xJet tank with a 2.1 ohm atty.. I have the vv set to 3.7 and had the vw set to 6 watts. Either the atty burns out extremely quick or I'm getting burnt hits consistently.. I've done all the calculations in terms of voltage x voltage / ohm for watts and voltage / ohm for amps.. Got poor results.. Then read that the sweet spot is between 6-8 watts. I'm still getting burnt hits more often then something pleasant. Any help is appreciated. Thank you.