Is the length of the coil wire what determains the resistance? My local vape shop sold me an atty he called "the bullet" I completely fried the first two coils trying to experiment with wattage and voltage combos. The first two coils read a steady 2.8ohms. I just replaced the coil and its jumping between 4.2 - 4.5 it came from the same batch of coils as the previous two. I bought this because I saw videos of people blowing monster clouds and im having no luck. Very disapointed, could I be doing something wrong? I followed the ohm, voltage chart I found on here to figure my wattage. Just to be sure im reading it right what should my wattage and voltage on a segelei z max be set at for a bridgeless atty if the resistance is 2.8? Sorry for the rant butI'd like to be blowing clouds of tasty vapes too. Thanks all.