My only problem is the price, I don't want to spend that much money, is there a worm gear I can purchase that, with a vertically mounted motor, I can run the train at regular speed? Also, I want this to be able to run on 036, so I have to have a motor less then an inch wide, an inch and a half long, with the axle one C.M. in from the back and height doesn't matter so much. All I need is either a worm gear that works with the starter motor, or a gear box. I tried making a gear box out of sheet metal but it didn't work well. If you have any ideas about making a working gear box, I would like your idea.