Only that with really low resistances you don't want to raise the voltage too high, else you'll burn the juice and if the atty/carto is dry, you run a risk of ruining them. But! it's not hard to avoid these occurrences, not at all. Whatever resistance you're using, just start out at around 3.7v and adjust up and down until you're happy

(Unless it's like a 3.5ohm, then 3.7v won't really do much for ya

) It's a learning curve, but not a difficult one. Remember, you've always got us to help ya out, and you'll have it no time, you'll see
I thought it looked different than most I've seen. Definitely keep that baby in good condition

Many folk'll pay and trade large sums for one in the Classys