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So I finally got to use my 2000 Max IV for the first time the other day and I have a question for you guys. Do they all whine at high speeds? Mine is basically a new machine with only about 10 hours on it, but at full speed it was whining so loud that it gave me a headache after awhile. When I put the sheild down on my full face helmet it helped, but it was still pretty annoying. I'm going to fully lube everything here in the next few days and see if it helps, but I thought I'd get some input from you fellow max owners too. Thanks!