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  1. CLR says don’t leave it on for more than two minutes, and dont use on aluminum or galvanized metal.

    CLR is a mild aciid.

  2. Use some rust remover and gently scrub with a wire brush to remove the rust, then after installing put a layer of grease/vaseline to prevent further rusting.

  3. CLR can sometimes damage nickel-plating and galvanized metals, causing them to rust in the future. That’s my guess.

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