Just an FYI: It's possible to rebuild the motors. You drill out the 11 rivets that hold the bracket on and motor casing together and pop it apart. Clean the useless hardened grease off the nylon gears with some cleaner. Remove the motor and wipe it down. Turn the motor brushes around to give you 'new' brushes. Apply dielectric grease to all the electrical contacts. Apply new bearing grease to the 3 gears and reassemble the casing. In place of the rivets you drilled out use some 10/24 bolts and nuts with some locktite. It shouldn't take more than an hour or 2 to do and the next time you need to service it, it'll be alot easier. Not only that but it's basically free. Unless there's a gear stripped inside then you should be able to do this.
