Tell you what ben, if you buy this thing i will personally come to your airpark home and teach you about the vendenyev engine, how to deal with the air start, to leave the air compressor or remove it, how to convert to champion plugs, which russian tools you need, how to check the mag timing and do the regular valve adjustments, what to check if the tach goes backwards, how to bandaid a weak scavenge pump, etc, etc. There are a lot of idiosyncrasies with these engines. Not hard, just different.
Again, I hope you actually do follow through on something but I highly doubt I’ll be putting on a Russian engine seminar for you anytime soon.