@"Super" the motor is stock, I don't have the equipment for soldering :/ ,tender is the battery compartment, and it's equipped with a special battery holder from a flashlight for 3xAAA. Required a bit of cutting, but really it was just the tabs that needed to go. That's why the 9V didn't work well, and then I got ahold of the battery thingy. And I got it to work!
Proud owner of Tomy/Plarail trains. 