> now it's 4GB larger than the versions on reddit.

Note that the first one they posted was bigger too, and in both cases, most of that extra size is coming from the following duplicate files:

  ai-programming-behavior-systems-part-01.1.zip
  houdini-director-volume-ii-part-01.1.zip
  mathematics-algebra-part-01.1.zip
  mathematics-trigonometry-part-01.1.zip
  modern-javascript-real-world-dev-part-01.1.zip
  modern-javascript-real-world-dev-part-02.1.zip
  modern-javascript-real-world-dev-part-03.1.zip
  modern-javascript-real-world-dev-part-04.1.zip
  unreal-tournament-2003-2004-part-01.1.zip
  unreal-tournament-2003-2004-part-02.1.zip
  unreal-tournament-2003-2004-part-03.1.zip

However, the new torrent that they posted does indeed include the two files missing from the Reddit torrent (which were also giving 404 when they originally realeased the files a week ago):

  xna-volume-2-part-01.zip
  xna-volume-3-part-01.zip

I am currently verifying the new torrent, but I have to leave any minute now so I don't have time to see what the result is until I get back but I think probably the new torrent they posted is going to verify correctly. We will see.

Edit: The new one is already reporting some files fail to verify as the first one did.

For reference, in this comment I am talking about the torrent file 3dbuzz-2020-01-13.torrent from the 3dbuzz website with SHA256 hash sum:

  e3adc900ff7d8bcb286119a059f216ea57a37096e84488c737f0db5b8e8eaeb5  3dbuzz-2020-01-13.torrent