ok new to vaping here after many years a smoker. So far so good. Have a few questions if anyone can answer? I bought an eroll. Nice, however I am not digging filling the tanks. I accidently ordered something I thought was a blunt needle but it was another dropper. I find the e-liquid (and I'm not over filling) seems to leak a bit around the tank as I can feel it and smell it on my fingers. Also, I notice each drag is a little different than the other, weak then a couple good hauls then an airy one, rather inconsistent however I've notice with some puffs, when I hear a crackling noise , get a good haul off of it. I wondered what is with that?