You seem to know what you are doing. And you have a special ability that I don’t have: you speak belarusian and english. The language barrier (let’s be honest, using google translator is only certain to some extent) is a quite big one. Wouldn’t you be willing and able to help me going through archives? Me and my family would be paying for all document-related costs (fees, translations) and we can give you a extra fee, for all the work that you will have done. We can give you all the info we have and the documents we currently have. You being inside Belarus and being a belarusian citizen helps a lot, you can speak and write properly, you can make calls, they have to answer you because you are a citizen. Are you interested?