I built a machine in 2008 with a Cooler Master V8 CPU fan. I've always run the fan with the knob turned up to the max. Other than usual constant fan noise it's been quiet. It just recently it's started making an intermittent grinding/squeaking/clicking noise. It does it less when the fan is turned down but still does it. It sounds like maybe a bad bearing or it's unbalanced. Anyone have this issue before with this or any air cooled CPU fan? Any ideas to fix/trouble shoot with out having to uninstall as that would be a pain in the butt.