Hello Trance!
You use WinRAR of latest version.It has "repair" command which helps to:-
a) to correct data erasure and insertion
errors in RAR archives containing the recovery record.
Earlier it was possible to fix only those errors, when
an archive size was not changed;
b) "Repair" uses fixed.arcname.rar and rebuilt.arcname.rar
names for repaired archives, where 'arcname' is the name of
original archive. Previous versions used _recover.rar
and _reconst.rar names;
c) It is possible to select several archives in WinRAR shell
and repair them at once;
d) 'R' command accepts wildcards in the archive name to repair
several archives at once.
regards/
ssg/pronetworks.org