Hello, I have recently purchased three of the "Old Timer" 4-4-0's( the ones made by Rivarossi and IHC) which I will probably repaint and detail out somewhat. But I would also like to install new or upgraded motors with better running characteristics than the original ones. Does anyone know a good source for better motors for these locos, or a specific motor? Sorry if this has been covered before, but I am new here. Thanks, John.