I bought an l-rider corolla 2.0 and its highly frustrating that its producing absolutely no vapor or barley any on most of my tanks. I've used a kanger pro tank 1&2, 3 different vivi novas, 2 dct cartos, a agr carto, a agat2 and a phoenix dripping atty clone all range in resistance from 1.4-2.5. The batteries have been both protected and non freshly charged flat top and post top 18650's. All the batteries and tanks rip on my segelie zmax ran at 3.0-3.8 volts and 7.5-9.0 watts. The only one that kind of works is the aga t2 but still no justice on the mech compared to the zmax. There's not very much to this device, so what's the deal? Any of you vets got an idea. T.I.A.