Thank you for checking your copies of the movies. My guess about the Warner editions is that there simply wasn’t motivation, time, budget, and/or interest in doing the job thoroughly. It’s possible some of the prints have been damaged over time and there wasn’t a budget for restoring them, so they just decided to re-use segments that were in good condition. Not every restoration project gets the same amount of love that, say, Nolan devoted to the recent 2001: A Space Odyssey prints.
As for the downloads, I changed to a new web host and they came down at that time. I’ll see if I can put them back up elsewhere.
I suggest you to try megaupload or mediafire. Their capacity is muck larger than dropbox.
As for the restoration of Warner, I don’t think that the time and the cost for searching and restoring the original details of the films, or for just watching the older editions that already existed in Bosko’s productions of LDs and DVDs in order to indicate any missing bits from their videos, would be comparable to the duration and the cost of the re-coloring procedure that they held. Maybe they just didn’t really care, as the missing details don’t belong to the main part of the cartoon.