A quick note that I didnt mention before to help on mouthpieces cracking........ Heat the area before the mouthpiece that's still the clear tubing instead. That way if it cracks, it cracks there, not down the whole neck of the pipe you just spent a half hour making. Does it make sense? If not I can try to reexplain, just hard since right now it's 8:40, which, coincidentally is twice as high as 4:20.
