Hey Fatman:
Seems you are a sucker for those Paya (Spanish) trains!!! They come complete with lousy mechanisms and zinc pest/flaking wheels. Why do you punish yourself so????
I have a good friend (Swiss John) in Switzerland that will completely gut these 3 rail tragedies, and install a decent Maxim can motor with good quality gears and drive wheels, so you can enjoy them running as the manufacturer once hoped they would.
Good luck in finding more to extend your agony π€£π€£π€£
Peter.....Buco Australia