I noticed at night, when I'm having a tendency to chain vape more (AND my battery is lower) my Nauti gets warm - particularly the mouth piece and the base...and after awhile even my iStick30 will seem warm. I do give it a rest a bit - and think it's likely just me vaping more at night. Right now set 3.9v/8.4w. I wonder if when I get my sub ohm shoes on (still learning about it -newbie) it'll make a difference? Is the Nauti just warming up because I'm vaping so much?