If the files have a recovery record (unlikely) then WinRar can repair them. WHen you unrar a series of files, WinRar gives you a screen showing the status of each file and if there's a problem with ...
according to the info, theres a 4096b "recovery record", but how do i use it to repair the rar? Try "Commands / Repair archive". This seldom works though, especially on truncated files. I think it was ...