Seeing as Small Bear isn't restocking, I've tried Google to find another source, but can only find stuff like SMD caps. Neither Tayda nor Mouser seem to have them.
https://www.diyguitarpedals.com.au/shop/index.php?main_page=index&cPath=12_14 (https://www.diyguitarpedals.com.au/shop/index.php?main_page=index&cPath=12_14)
Chromesphere (who is on this forum) stocks them, along with other pedal DIY goodies
Edit - Mouser does have them. My search fu was weak.