I've been smoking ready rock (crack) for some time and can't seem to still get it right. I use a stem (rose) with chuy (choir boy filter) and either put too much or not enough on or I burn it with too much heat. I've seen people move the flame back and forth but I just hold the flame at the bottom tip of the stem. Sometimes I get white smoke and sometimes I get a brown oily smoke. A gentle pull to inhale the smoke seems to work better than a hard inhaled pull. Any tips on a more efficient and productive method of using a stem? Thanks