I worked in a hot shop last year for about 6 mos, as I wanted to learn how to make really big, curved beads. Didn't happen, but I learned a few things.
Returning to my torch, and 104, I learned to make pipe blown beads. My biggest problem is with debris on the pipe getting on the bead hole. Unlike furnace pipes, stainless blow pipes seem to need to be glass free from one bead to the next.
Some of my experiments:
This is a good little video that answered a number of questions for me.
https://youtu.be/SgaN1q4enk0