Thanks to erri_wan, I finally have the AVI file of the Italian broadcast. Hotmail was being really uncooperative in getting me the download links for some reason. I plan to try running it in sync with the LD capture, and see if any other obvious changes occur past the opening.
I nearly freaked out when I saw this on ebay today.
http://cgi.ebay.com/16mm-Film-THX1138-/270647193771?pt=US_Film&hash=item3f03d470ab
Alas, it's not a scope print. :(