Found the fix it is not easy but it works (after a couple of chkdsk runs) Chkdsk logs won't go away - Microsoft Answers
"I have finally found the answer:
Cannot Delete or Repair Corrupted File on NTFS Volume
"This behavior can occur if the NTFS volumes' Master File Table (MFT) is corrupted. The short and long file name pairs that are stored in the directory index record and the file names that are stored in the associated File Record Segment (FRS) contain case-sensitive characters that do not match.
NTFS supports case-sensitive (POSIX) file names, but Chkdsk does not check file names in case-sensitive mode.
For example, assume that the directory index record has a BADFILe.TXT entry but the FRS has a BADFILE.TXT entry
for the file name."
So I temporarily took ownership of "System Volume Information"
then turned off the hidden and system attributes for the Chkdsk folder and deleted the files there.
The bad files looked like this:
Then I changed the attributes back and re-ran Chkdsk.
It was not a drive error - I ran a surface scan - twice; and the Seagate long self-test - twice.
This is a 2 TB drive so that takes a LONG time.
I have no idea how the file case got mangled by Chkdsk originally, but anyway - if this ever happens to someone else, now you know what to do."