The VV Bogger ships at 4V, and the potentiometer (controlled by the screw) seems to be about 180 degrees per half volt. Or so it seems to me. Usually I just go by taste, but on finicky cartos like Kangers it may be a good idea to use a voltmeter.
The AMG hybrids worked best for me, you may have gotten a dead atty. I know I had one that died after about a week, just stopped firing. Not sure if you can do anything about that myself. Did you remove the little rubbery washer at the bottom of the AMG? There was one on mine.
The 18350 batteries take about 1-2 hours to fully charge on my Pila charger. Since they're stacked and it uses a fairly decent regulator, you can get some great battery life. Usually I get about 8-10 hours at 4ml a day. The ones Marcus ships are flat top, so the positive end is the one with the grooves in it.
If you use a carto, fill it up first. If you use an atty, put in a couple drops on the first use. Squonk to refill. Make SURE when you refill the bottle you take the tube off the steel tube slowly and put it on the same way. The tube is attached to the bottle cap as you can see when you fill it, and if it slides it can leak or not fill properly.
One last tip, I've noticed that sometimes I have to squeeze the bottle and hold for a few seconds until I see a little juice pool around the atty (a drop or two). This helps when you taste any burning.
