What Susan said, "Block it up." Materials used for vapers are usually what ever you think of 1st that's on hand. If you really like the setup, then think about what material will holdup & not look like you rigged it w/ duct-tape & bubble gum. (Stoner rigged)
My 1st thought is to put a little
juice on cotton/rayon, twist into a point, feed through the hole/ holes until tightly clogged & then trim the outside off.
It's riggy as hell, but WTH. Am I right, or am I right?
A quick BTW: I'm always right. I'm a woman. ;p