Sometimes when I set the fan speed to lets say 2 or 3, the fan motor sounds as if it goes higher like all the way to 5. If I wiggle the fan **** slightly or change to another setting and back, it will calm down back to the correct speed. I would suspect the actual switch but most people mention the Blower Motor Resistor failing and causing fan speed issues. Does that sound correct? Just wanted confirmation before I drop $126 on a resistor I bet no one wants returned...

Thanks!