When you hit a really big tough roadblock in your genealogy (like into Russia?) then it might be time for you to consider hiring a professional genealogist. Have you ever heard of genealogyDOTcoach?
This is a fairly new online service matching professional genealogists (called Genealogy Coaches) with people who want to have all the fun of making family history discoveries for themselves but who just need a little assistance from someone they can trust. This new family history service has been formed to fill that critical gap. It was initially launched with 26 coaches with expertise across 46 different topic areas.
If this is a life-preserver-tossed-to-you service that might interest you, Google the name and start learning and feeling better!