Grant I was using an No2 before I got my Pax so I can appreciate your dilemma. Its not the same. If the mouthpiece is hot you are pulling to hard. Slow your roll, puff don't suck. I sometimes use the Pax like a flute, only inhale instead of exhale (I hope that makes sense). That way I'm never drawing to hard! Keep at it. When you get it right you will be rewarded.