Aww, Rado! This has to be one of the best videos yet! I hope to follow along behind you someday soon! The slobbering sure does make a mess! Have you thought to get a few spare valve guides, and repair the heads and lap the valves? One day, the supply of cylinder heads might dry up!
What a surprise it was to see the exhaust cleaning instructions in Ukrainian! :)) By the way, you can always tell Ukrainian from Russian by the letter "i". If you see at least one familiar letter - that's Ukrainian.
