| I'm following all of it. LOL Here are some pics of the inside of the motor. Does this motor have the "brushes" you mention? It seems it has two magnets on the inside of the case and changing the polarity, i.e. turning the radio on off determines which electro-magnet is activated causing the motor to spin in one direction or the other. 



Thoughts? I did use some que tips to clean some metalic-rust-colored dust out of the bottom of the motor. Other than that it seemed fairly clean.
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