Additional: I use 26awg Ni200 wrapped 3mm about 8 wraps reads 0.13 vape on my DNA200 at 45 watts and 450 degrees with 100% VG Velvet Cloud.I have a couple of Hobo V2s and a Hobo V3 (not V3.1). I like my V3 the best. The allen screws are larger, plus the V3 is a two post design. My V3 is a 1:1 clone I paid about $20 for. I changed the O ring on the cap to make the cap easier to pop off.