Answered my own question. 5mm set screw from HD. LBS wanted to sell me a full rebuild kit.

YMMV

 

Hi, Don;t suppose you remember which ones they were? I'm in the same unfortunate situation.

 

It's just the generic 5mm diameter set screw you'd get at any hardware store. My guess is the thread pitch is a standard one. I got the 8mm length which protruded a bit so you can go shorter.

-Lee

 

Isn't there a tiny O-ring on the original factory screw?

Just watch out for a leak.

I've used some heat shrink tubing to mimic those tiny rubber seals.