This is not a link, but it should help you find his blog main page (hint: use google or cut and paste this after the http stuff):
"uhu02.way-nifty.com/blogpapercraft_ver2"
The Discovery model is available from the two most recent entries in his blog, seen as about 25 separate pages or links to pdf files. Be sure to snag the page 13x fix from the most recent entry. You don't need to understand Japanese to get these pages...I just checked and they're still there. Hope this helps. If you get it, don't just collect it on the HD. Build it and send photos. That's my plan. This is officially my next build project on top of a veritable mountain of models "to-be-built".
While I try to respect people's wishes about limiting connectivity, I really don't understand it. This is the internet after all and once you post something freely, you effectively surrender control of it in terms of who can link to your site. One could always password protect it and closely guard the pw, or just sell it. That would limit the spread somewhat. I really appreciate his work and his generosity, and I understand the desire to protect copyrighted effort, but I don't get all the need for secrecy, or for shouting.