Aaarh, I was hoping for some miracle chemical that could clean without taking the whole thing apart.
It'll have to wait to the next crankproblem (knock knock) , hopefully never.
People talk about caustic soda, but I tried to clean aluminium with it. It works but leaves the alu black, not shiny.
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Poul
"If Life Gets Boring, Risk It!"
MC21SE, KISS box
MC21SP, HRC box, racing loom