I finally tackled replacing the shutter in my Zorki. I ordered a shutter kit which a Ukranian seller had on Ebay. It arrived a week after I paid for it, but the envelope sat on my shelf for a month before I motivated myself to work on the camera.
I was a little worried that I might make a mistake (I have no experience repairing cameras), or misplace some parts, but the installation when surprisingly well. I haven't adjusted the shutter speeds yet, but the "B" setting is functioning, and the shutter speeds don't seem to be far off.
Tomorrow I'll adjust the shutter speeds and load a roll of film, hopefully the weather will cooperate, and I'll get a few good pictures.
If anyone needs help, or has questions about replacing the shutter in their Zorki or FED, feel free to ask.
Congratulations !!! afaIk it is not an easy work ! So , I think you must publish an "How To Do" sheet for more informations whith pictures please... It would be usefull for us . Alain