Well I picked up my first vaporizer from GC , I grinded up some 'popuri' and let the chamber get some vapor (took about 10min or so). This was on almost all the way high setting. Got taste but that was all, the 'popuri' changed to a dark color after a bit. But after 4-5 pulls I notice nothing... any advice? EDIT- I got this one- http://www.grasscity.com/aroma-therapy-super-vaporizer.html Grinded the stuff, not very fine but more than I would for a J... I put it in right away, it heated up loaded.