I haven't had any issues with mine (other than the topfill being a pain in the ass to get on and off!). I have been using the .5 coil at 40-45 watts, no dry hits or burnt hits. As asked above, what coil/wattage are you using? Did you properly prime your coil and start it off at low watts, slowly increasing power till you get to recommended wattage range? It is possible you burned your coil by using too high wattage.