Where can I buy the little white plastic inserts for Costar stabilizers? The stems on the ones that came with my Filco are slightly too narrow for the set of custom GMK keycaps I bought and consequently will almost fall out if I pick a keycap up with the inserts in. I found this old thread but unfortunately it seems WASD Keyboards no longer sells them:
https://geekhack.org/index.php?topic=39812.0Searching Google just gives me results for the other parts of the stabilizer, i.e. the wire and the parts that mount to the keyboard, but not the plastic inserts.