There is no salvation? (Dying hard drive)

32 thousands of hours to train - this is a good indicator. And if began to appear pending and errors read/write (and their number is growing), then there's nothing you can do about it is the aging process of the disc. From my own experience I can only advise to addsite drive using Linux - so those 83 pending can be marked as Implenia and will not be used. May require more than one approach. All data on the disk will be destroyed without possibility of recovery, by the way.

Everything is fine with the disk, re-allocation of bad sectors no. More work.
Maybe the cost of the disk to Unscrew and clean the contacts on the Board, I revived a dead drive, it's just oxidized contacts.