I have a Hoover Constellation model 444 with a worn bushing or bearing. I turned it on one day and it sounded normal but when I turned it off it started making a heavy rumble/grinding sound. I took it to a vacuum shop that repairs lots of older vacuums and they said that the bearing was not able to be replaced just because of the way the motor is. They said there were four things I could do, strip it for parts, find a new motor for it, turn it into a lamp, or sell it as is. What should I do?