I recently purchased a Rittreck view camera with the 5x7 and whole plate backs. I have one "Rittreck Hope" whole plate (yatsugiri) holder which is in excellent condition. The Rittreck is a great camera and I find whole plate very appealing, but I'm hesitant to go much farther without at least a couple of spare holders. Where do other users of Japanese whole plate cameras find holders? Does anyone make them? Or do I just take really, really good care of the one I've got?