ok, so i dont remember what thread i found this little tip in, but i think you guys are gonna like it.
take your cart and cut the majority of the slim end of the mouthpiece off. it allows for probably 3x more airflow and a much better hit. the tube im currently using has NEVER produced vapor like this. its always been ok, but nothing like this.
and for those of you that like to chew your cigar, i also took some black electrical tape and wrapped it around the end of the tube just barely above the brass ring. it may sound a little strange, but actually im quite accustomed to it already. i worked for years as a theatrical lighting technician where my crescent wrench was my most important tool. when you spend a lot of time in the air hanging from truss you run out of hands, so one day i wrapped up my wrench so i could hold it in my mouth when needed without hurting my teeth.
im in friggin vapor heaven right now. vaping some JC tennessee cured and i damn near feel like im smokin a real cigar. good times.
enjoy