Sorry about that. As you noticed, I don't really use that site anymore. (My fan translations are down to just FSF and some manga I work on with other groups, so there didn't seem to be much of a point.)
I'll see if I can go back and add links to all the EPUBs to it later, though.
In the meantime, here's the EPUB for book 6:
*****************************file/lrdhg...yogo.epub/file
It unfortunately lacks images except for the cover, because I don't currently have access to a scanner. I could add them in later if someone has them.
I have some typos to fix in previous books, so I'll upload updated EPUBs for those later tonight if all goes well.