Fantastic tank, have 2 on the go now, with 2 more ready for Xmas, not had any issues at all, i use Ni80 quad core fused claptons coming out at around 0.2ohms and vape at 80 Watts, lots of flavour, huge clouds with airflow just about halfway. My coil legs are around 4mm and coils pushed off centre towards edge of deck, wicking is cut so it just about touches the juice wells when dry, once soaked I push them in slightly further, but NEVER to the bottom of the well and it doesn't need stuffing in there, I use firebolt cotton. Love these tanks and they are easily comparable to most of my bottom airflow tanks, I've always found if the flavour isn't quite there, up the wattage, never had flooding or dry hits, once you've nailed the wicking, you'll love this tank