So I bought a G-Pro vaporizer (This is where I bought it http://www.gpen.com/products/gpro-herbalvaporizer) and I was wondering what I'm supposed to be exhaling. I've been reading a bit about it so far, and some people say you see smoke and some people say you see a light smoke when exhaling. Right now when I use the vape on the blue setting (420 F) and so far I see little no smoke coming out when i've taken a 10-15 second to toke. All my herb turns brown and i don't feel high at all.. please tell me what I am doing wrong.. I heated up the tape as it was supposed to be but it just doesn't seem to work..