I had no idea there were regulation twine sizes. I guess there is a sizing system for everything!
So for anyone else confused by what size was meant in this recent post, here’s the best twine size chart I could find.
http://l-36.com/twine_size.php
(Apparently #36 twine is 0.085" thick)
From this question:
https://vexforum.com/t/pneumatics/16579/1
I’ll leave the rest to the official Q&A, I was just confused on twine sizes.