Pull it apart- completely apart. It would be a great time as Iggy said to do bearings and seals. Won't cost you that much, and the motor will be like new. Besides you have, what- 10 CR500's?
This one being down for a bit longer shouldn't be a problem.
Also- PM me if you need some nitrous switches...
You too Brit- I hear you broke one and haven't even used it yet
![Applaud :applaud:](./images/smilies/applaud.gif)