Check Ohm's after every new build (about 2-3x's a night) - dry then wet. 1.5 is the lowest with dual coils I've hit but I shoot for 2.2-2.4.
I understand the basics - DC electricity, resistance, power, viscosity, wicking - can't seem to get them all to play nice together is all.
I'm pretty confident if you post over at the rba forum, they're going to tell you to go lower on the ohms;
other than that they're probably talk about how much cotton to use: not too much.