I came to VV because I developed a rash on my hands. Since vaping VV 100% VG juices the rash has slowly disappeared until now it is almost gone. I have on occasion vaped PG juices and didn't like it as much as 100 % VG, so I'm sticking with 100% VG. My allergy is not an immediate reaction but more like I exceed a threshold after vaping PG for a couple of weeks and then they start to develop.
The dry burning is done after soaking/rinsing the juice out and has two purposes. 1) to remove gunk, and 2) to evaporate the water and dry the wicks. My rule of thumb is, if I cannot distinctly see the individual coil wraps, I do a dry burn. On the excessive gunk on vivi's Redhen reported, I do not experience this. I have vaped both Plum Crazy and Kona Coffee Milkshake on the vivi's without any excessive gunking. I tend to vape at a slightly higher voltage, for example, at 4.1v on a 2.4 ohms coil using Creme Caramel. At about 3.9v when vaping Plum Crazy on 2.4 ohms, etc. I don't think this small difference in voltage (.2v or so) can account for the difference in the amount of gunk on the coils so I'm at a loss to explain why it gunks like that for Redhen. One suggestion would be to measure the actual voltage you are vaping at Redhen, as well as the coil ohms, with a multimeter, to make sure your voltage and resistance are what you expect. On the vivi's, measure the resistance with the head off the tank, before screwing the head on the vent tube. If you try to measure at the 510 connector you may get wild readings that make no sense. I get these all the time with both the full size and mini Vivi's (the meter jumps all over the place, 20, 30, 12, 17 ohms, etc), and only get real readings with the head off the tank. I have no clue why this happens. I can measure ohms perfectly well at the 510 connector with heads installed on the SplitFire, Titan, T3, and Stardust Replaceable. It's only the Vivi that does this.
