LOL, clean a fan every 2 weeks? I clean ours about every 2 to 3 years. My proplem is the fan rattles when tilted upwards. It's a 16 inch desktop fan, but it sits on the floor in our bedroom. I know it is the motor shaft shifting back and forth. This fan has done this pretty much since it was new. Is there any way to put a spring or something on the motor shaft to stop this rattling?