I bought a Zalman 9900 max, which is copper that has a nickel plating. It has some green oxidation where the heat pipes meet the place that attaches to the CPU. I know copper turns green after time, but why would it be doing this if its nickel plated? Are the heat pipes maybe leaking and causing it? Is there supposed to be enough liquid inside a heat pipe to be heard if I move it around, like could I hear it splashing inside? I dont hear anything inside, so if i should I guess its all leaked out. Thanks, and sorry if its a dumb question, but I have checked google for the past hour and still dont know.