I bought a used Bachmann train and am relatively new to model trains, but in opening it up the nylon/plastic gear that connects to the brass motor gear, is worn on one side. The train can run, but you have to give it a push to start and if you add more than one car, it doesn't move. I looked on the Bachmann parts site for it and they show what I need listed as "Gears w/Pins 0n30 2-6-0 but it also says "Temporarily out of Stock". I contacted the company and they said it could be months before they have any. Does anyone know where else to get these or a brass substitute?