I just came across this fellow's channel by way of a YouTube thumbnail of a rusted out and filthy dirty PE-R60!! When I saw it, it was to weep.
How in "heck" did it ever get that way, and did they slowly remove the gonads of the purp' who did this dastardly deed?
We'll never know 'cuz they don't say. 'Cuz there's no narration at all.
Just a beautifully filmed documentation of the complete resto right down to the screws and nuts and bolts, and ending with a demo. Just shows to go ya that ya can't keep a good Mats down!
Pour a glass of your favourite beverage and watch this remarkable transformation. And find yourself saying to, um. . .yourself, "That's not the way I'd do that!" or "Geez, hadn't thought of doing it that way!"
https://youtu.be/_pA2RUQfusQ