I'm trying to get this engine up and running for a friend of mine. The locomotive is in great shape for the most part, except that the main idler gear is disintegrated due to zinc rot. It's got a patent number on (1-685-691) it and was utilized in several American Flyer O gauge locomotives of the era. Northwest Short Lines is open to the idea of making a gear for it, but they need an accurate count of the number of teeth on the gear which I unfortunately can't cipher from the remnants of the gear I have. Does anybody have a Prewar American Flyer locomotive in their collections that utilizes this gear that they could count the teeth on for me?