Has Timmy messaged you back yet? If not, here is my crazy suggestion
Follow guide 2 at this link which will put a MBL OS on the drive. Just do this on one disk…
http://community.wd.com/t5/My-Book-Live/GUIDE-Debrick-MyBookLive-v2-0/td-p/567582
Since this is only a 3TB image you will need to follow the steps in guide 1 to expand the data partition after you boot the drive once from the enclosure and do a quick factory restore
After you are done, follow this guide to write the MBL DUO OS to the drive. You will obviously need to use the rootfs.img from a MBL DUO firmware in place of where I tell you to download the MBL firmware.
The one thing we will have to do manually is set sda4 as raid if you get the one drive working.
You can try to SSH in and type
parted
p
set 4 raid on
reboot
I don’t know if we can do this with the datavolume (sda4) mounted. If you run into errors you can do this part by again taking the drive out of the enclosure and hooking it up to your pc and booting the system rescue cd and issue the commands from terminal
Once you get the one drive working, put an unallocated/unpartitioned drive in the disk B slot and disk A should rebuild disk B
As I said, I don’t own a MBL DUO but this is how I would start to go about it if you can’t get the wiki images working
