As a bonus, I'm including another question/answer that briefly mentions Mike Matessino. It's from the Cut Scenes Yahoo! Group I'm a member of. This one was answered by Mike Coate from widescreenreview.com:
Q: Anyone know of any differences in the opening day versions of ESB or
RotJ?
A: Many differences, picture and sound, between 70mm and 35mm versions inn TESB. Some of the transitional wipes are different (wipe vs. straight cut, etc.)... When Luke falls to the snow after tossing the grenades into the Imperial Walker, the background Scout Walker element was recomposited for the 35mm version... A few extra shots and extra line of dialogue in final scene... Medical Center scene has a closeup of Luke in the tank in the 70mm version and a long shot of other characters watching Luke in 35mm version.... there are others... Extensively documented by Mike Matessino in FILM SCORE MONTHLY magazine (Jan/Feb 1997).
I am now trying to locate this article. If anyone can help it would be much appreciated.