Disk Utility Cant Repair My Book Duo

Ever since a couple weeks ago my 8tb WD EHD has had so many issues. I have been trying to use time machine to back up my mac and I keep getting this error

And when I try to repair it in disk utility it says this

Here is the full log from disk utility.

Repairing file system.

Volume was successfully unmounted.

Performing fsck_hfs -fy -x /dev/rdisk2s2

Checking Journaled HFS Plus volume.

Checking extents overflow file.

Checking catalog file.

Checking multi-linked files.

Checking catalog hierarchy.

Checking extended attributes file.

Incorrect number of extended attributes

(It should be 7387648 instead of 7387652)

Incorrect number of Access Control Lists

(It should be 7387525 instead of 7387529)

Checking multi-linked directories.

Invalid parent for directory inode (id = 42075115)

(It should be 19 instead of 18)

Invalid name for directory inode (id = 42075115)

(It should be dir_42075115 instead of temp42075115)

Incorrect number of directory hard links

The volume My Book Duo could not be verified completely.

File system check exit code is 8.

Restoring the original state found as mounted.

Problem -69842 occurred while restoring the original mount state.

File system verify or repair failed.

Operation failed…

After that failed I tried to change it to read/write in "get info" and it comes with this.

"You do not have permission to complete this action." But I am an administrator!

So am I pretty much screwed?

Ive read online about re-formating but I would lose 3TB of files.

Thanks,

Carter