This is very interesting. It seems you are saying that your only option is a local (Russian) source. Is that a correct statement? I'm guessing since Russia is now a "free" country, and you have McDonalds hamburgers, shipping bicycle parts is not impossible. I can visualize getting you the parts you need, but you need to convince me you are truly a vintage and classic bicycle owner in Russsia, who needs help getting your bike back on the road, and you are financially destitute. Would you be willing to share your life's circumstance?

Cheers