I've got one, and it's still running!
I suppose this is a bit late, but I had a similar problem on my old WP600, which, by the way, is still running. The seal at the bottom of the drain has to be dismantled, and that means turning the machine upside down and going from there. If you can get things cleaned up, and maybe create a gasket if a new one is not "available", then you just have to epoxy the whole thing so the leak stops. I fixed mine 10 years ago and it's still holding.