Wow, only 1 level per transfer? I guess that's to prevent people from getting too powerful of Pokemon just by using the Pokewalker. It's also a good thing, in only one way. If your training a Pokemon that evolves by happiness you can just keep it in the Pokewalker until it gains enough happiness, so it will evolve at a lower level. Or do they restrict it to only a certain amount of happiness per transfer too?