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  • Just had a look on the web (as I dont know)
    One shows heating with a gas torch so I would say yes, and the other with oven cleaner. Your guess is as good as mine there I'm afaid.
    I do know that Vitus tubes were anodised before assembly, hence the different coloured lugs. Also the white (like mine was) and maybe the black frames were painted not anodised. I think this would be the better route for you in the long run.

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