Thanks!!!
How did you find them? I think it's time for a nasty gram to Mamiya for removing all the links, it happened shortly after the sale, and I still have no idea why they changed the site to remove them.
Of course I still have no clue as to why they aren't making the ZD back work with the older bodies (there are several ways to do this without losing any important functions), and why they are not pursuing digital with the rangefinder cameras. Now that I have one of them, I know it can be done!