GP, isopryl alcohol, or rubbing alcohol, has a relatively low flash point. And I would guess some cleaning properties. I would be worried about a flash fire, and removing whatever oil is used to lubricate the motor. When I was a kid I had a chemistry set that used isopropyl (rubbing) alcohol for the fuel in the burner. There is a contact cleaner that is sprayed from a can. I would check with RS for that first. You might try hosing down the motor with that product, then use some canned air for computer clean up next. Then you would need to relube the motor. Have you checked the voltage to the motor? If the voltage is low it could be the RX.