Hello ECF. I'm new here but not new to vaping started with a Itazte VV, then went down to a few fireflys now have a innokin itazte SVD, I have a carto, 2 iclear 20's, a protank 2, and a nautilus and have 1 rda the smoktech caterpillar just rebuilt the coils on it its a dual coil im using one single micro coil with 13 wraps cranking out at 1.9 ohms 