I have now recovered as much data as possible from the remaining two disks. Tomorrow I will patch the disk images with the blocks I recovered today and look for matching blocks for those I could not.
I reckon the Pinball Fantasies 3 disk is certain to be uploaded tomorrow (4 missing blocks, but I've recovered the highscores). Ultima V is looking more difficult (11 missing blocks, and I'm not certain I've got the gamesaves), but I'm still hopeful.
Edit: Can you try that Pinball Fantasies 2 disk image? I'm not absolutely certain that the highscore data is properly formatted. It shows up when you're presented with the choice of tables, but I'm not good enough to register a highscore myself to see if the highscore table will be properly updated. Thanks!