I purchased this a few weeks ago and can't even use it! I normally vape 1.5-2.0 ohm coils and have a bunch of other mods (vapor shark, Itaste MVP, hana clones etc) and this just seems to put out no power at all. When on max voltage or wattage I get about 20% of the vapor I get out of other mods with the same tank. I normally vape at 8-11 watts with most my tanks so I dont think I am asking to much from the device. I tried contacting the ebay seller ZMOTOUSA that just told me "they test these from the factory and there can't be anything wrong with it" Is there any warranty support for these or are they all this bad? Thanks!