I don't know anything about the BTTF set. Only that the framing is wrong on one fo the movies. I guess deciding between two different screwed up versions is a no win situation. Hopefully the WS one will be corrected.
Actually John, the framing is screwed up on two of the films, 2 minuets on part 2 and 4 minuets on part 3. I have no idea though if those minuets are spread thoughout the films or are concentrated.
My concern is this, I wonder if Universal will have someone go through and check the framing in each and every shot for both movies or will they just do a quick patch job on the big known problems, when maybe other frames are messed up too.