Flathead distributor parts sources?

Does anyone know of any sources for parts for flathead distributors? I'm rebuilding my distributor and I need parts for it. I know plenty of places to get points, caps, rotors, and condensors but some of the other parts I can not find. The distributor is complete and all of the parts look good, except for the piece that goes underneath the plunger in the vacuum brake. It's rusted and has a groove worn in it. Unfortunatley I don't have my digital camera with me so I can't take a picture, but hopefully someone knows what I'm talking about.

Also, where can I get new insulators for the plug wires? I'm talking about the rubber boot type pieces that the two bundles goes through before they go into the wire looms.

BTW, this is the kind of distributor I'm talking about:

http://www.vanpeltsales.com/FH_web/...ics/Flathead_Distributor_1946-48cap-wires.jpg

 

C&G parts, Joblot in Queens, Sacramento have a lot of bits. You are talking about the leather on brake piston I think...you can clean up piston, rotate it 90 degrees. I have heard of people punching a piece out of a belt, using rough side. New ***emblies are out there in some of the catalogs.

 

Thanks! Sacramento has every part I need. I had them on my favorites list and didn't even realize they had these parts.