Hi Arnie,
Thanks for confirming. I just found them as well via the FTP search. I now also found the threads that mention the disks remaining.
http://eab.abime.net/showpost.php?p=890734&postcount=35
So now only 2 disks are remaining before its a complete set. The interesting thing is that there is 2 disk 18s:
http://eab.abime.net/showpost.php?p=769982&postcount=45
Only the correct superdisk 18 has been preserved. Hopefully someone has this 2nd one.