Well, out of the box I have to say that this RA is working really well. Great taste, plenty of vapor and a nice draw. The nice thing is, I know it can and will be even better! Don't know if it's my DMM or what, but I measured the ohms, post to post, and it displays 2.5. Well I tighten it to my LT, only turn it to 3.7v and it's glowing nice and bright. Cap her up, toss in my liquid and everything is golden..even at 3.7v? This can't be right.. I may have held the lead on something I didn't want to, but once I got it up to 5v.. it no longer worked. Everything looked fine and nothing seemed to be touching. Screwed it back on and left it at 4v and it's puffing along quite well again.. I guess I'm just confused as to why I'm vaping it on 4v and it feels like I'm going at a 2 ohm carto at 5.5v, give or take..