All I vape on now are my Russian 91% and my KFL clone with clear kit. I always use 30 gauge Kanthal, do a micro coil 6 wrap on a 3/32 drill bit to about 1.4 - 1.6 ohm and stuffed with enough cotton to reach the bottom of the deck, PBusardo style, but coil less packed. This has been my tried and true setup since I got my Russian in November. This morning I tried a dual coil on my KFL clone for the first time, did a double barrel shotgun, 10 wrap each with 30gauge around 1/16" needle, totaled out at .8ohm. Juicy, warm and mouthwatering thick vape!!!!!