Your newsreader should be able to handle “par2” files which allow any incomplete rars to be repaired automatically. If you can’t get this to work in your newsreader, then try QuickPar software. It’s free and will fix your rars provided you have downloaded enough par2 files from the newsgroup.
Thanks for the response. Sadly, neither worked. Unable to repair. Turns out there are actually 2 missing parts…