Maybe it's time to yank the top friggen top end apart...and aren't you trying to sell this thing?

I feel sorry for the poor sap that buys it with no knowledge of anything wrong...but I'm sure even a non-carpersonmanwomanguy would be able to tell something is up there. That ain't exactly, un-noticeable.

Don't waste your money on a "Motor Flush"...

Go get a big screwdriver and try to pin point the noise with it...hold it up to your ear to listen while it runs.