Hey everyone, first time poster on the site, and first time owner of the minivap! Just received my unit last week and have been loving it. However, my unit now, while it's on will make a faint. high pitched whirring sound, similar sounding to coil whine from a graphics card. Also, I noticed that the buttons to change the temperature feel vastly different from one another. My increase button feels nice and tactile whereas the decrease temp button feels mushy with very little tactility unless i click it directly in the center. Not sure if this is part of the design so you can distinguish the buttons without looking, or potential QC issues? One last thing, when I smell the chamber, like, stick my nose right up to it, I can smell something strange... not quite sure how to describe it, it doesn't smell bad per se, just kinda artificial. If any minivap owners could chime in with their personal experience it'd be much appreciated. I just sent minivap an email detailing the problems and am currently awaiting a response. Thanks.