yeah, sorry i cant remember who was asking about how low users go on their v3 (or something to that end) a couple of post back, but i have always used .4-.6 on a v3 (18490 and 18650) and i have had no problems. I even dropped it below .3 - momentarily; and no problems. That low is not recommended. So, it's interesting to read about certain users elsewhere complaining that their switch gets hot, but they never mention the build they are using. Some of these people are dropping their builds really low, like .1 and then complain "oh, the GP switch got hot on me...blah, blah, blah." Well...guess what? Duhhh...THAT"S NOT RECOMMENDED. Anyway, I've never had a switch get hot on me with a .4-.6 and above build using vtc5's, 18650 aw imr's, 18650 LG2's, 18650 purple efest, etc. Now, I have had the bottom of the atty/top cap area get hot when chain vaping, but I have other mods that have the same result. Push a dual and/or quad coil build hard and things get hot, what can I say you know...