Pull the tube out of mouthpiece look through it. I see a circle of gummy stuff there, blowing dislodges the chunks which are what stops this thing by offering no electric contact. I think that it only contacts from the top of vapor tube, the rim only. That's evidenced by reports that blowing up the mouthpiece and the dental brush clean of pipe and spring area working very well. That is cool pakalolo for the images of inside pax. See a 18650 battery! If we change the wiring to spring contact plate, glue in the magnet too, and switch the hex nut for a thumb screw we can do battery replacement on the go! These batts are avail cheap and chargers which charge two up also available all at my local electronics store. So slide cover off, swap batt, slide on cover, turn thumb screw and keep it vaping? Now I'm buying another one just to mod it for heavy, I mean excessive use. This way we see how long the heater element lives too. Now it's late bed becons and paxing just as I dose off is just best, pax will standby...then power off, that way one can pass out in stealth and safety. I'm always on low till end, reload, place abv on top as packer mat. Then when all powdered up and oven is chock full of abv then I switch to high and cook and stir it off. Abv almost black then. Ya gotta love this thing it's just right, in winter makes nice hand warmer ;-)