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    Need help for those blotchy marks (color change) on some metal parts.

    I've tried WD-40. It cleaned some of the affected parts, but not on the marks on the levers and the fork (but it reduced the marks by %30). Should I continue using WD-40? I worried about the forks, because they are around $350. Any non-abrasive chemical suggestion?
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    Need help for those blotchy marks (color change) on some metal parts.

    WD-40 was always in my mind, but I hesitated using it. I'll try the WD-40 and write the results.
  3. D

    Need help for those blotchy marks (color change) on some metal parts.

    Mild polish is a light abrasive component, isn't it? Which brand do you suggest for the mild polish? I'll definately buy and use the ACF-50. Levers are easy to change, but I'm mostly concerning about those gold anodized fork pipes, they are really expensive. Is it impossible to repair the...
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    Need help for those blotchy marks (color change) on some metal parts.

    My Yamaha service says that the auto cleaning chemicals cause this, but the auto washing service told me that the reason is limewater or the rain. I don't know how it happened, but it made me upset. Do you know how to fix this? Any chemical or something else? Thank you. Here are the pics:


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