Just got a DBV about 3 weeks-1 mo ago myself, and my wife and I are going through the same learning process. Temp and draw seem to be completely interdependent, i.e. to get the same type of hit at a lower temp requires a slower draw. Too high a temp or too slow a draw results in burning. It seems to be herb dependent, too. I've got some island sweet skunk that I can get really good rips from, but some sugar skunk that, well, not so much. Oddly though, very often even though I didn't seem to get much of a hit, 10 minutes later I'm ripped. Still beats smoking in any event.