Kodak No.1 Folder & Kodex shutter No.0

Hi,
I Just got an Eastman-Kodak No.1 Folding camera. It has the KODEX No. 0 shutter on it.
1. The shutter *Sorta* works, that is the Needle on 50 works all the time, 25 after I click it a time or two, or on the right iris setting. And BULB Works, and TIME only works as BULB.
I'd like to get it working properly, How can I remove the shutter, how I can take it apart, and What may I expect to see inside?
Also, How can I remove the bellows for repair?

Thanks

There's an owners manual over on butkus.org/chinon but I could not readily locate a repair/schematics manual of any kind. So, it's either happy hunting or you get to be the one to document a modern version. In any event, just be careful with this gem and welcome to APUG.

I'm not 100% sure about the No.1, but the Vigilant has a retaining ring to hold the shutter on. The Tourist has two screws that come from the front to hold the shutter to the front standard.

What would the retaining ring look like?