NOTE: Resistance will vary depending upon lead length and Atomizer-Post composition. Copper center post will cause slightly lower resistance and the shorter the leads (closer the coils are to the atomizer) the lower the resistance will also be. Always break in coils on mechanical devices. If you are using a high wattage regulated device, insure the wattage is turned way down during the initial installation/dry firing process. District F5VE does not warranty damage due to incorrect installation.