here some links for you.
maybe you find more informations or ideas:http://originaltrilogy.com/topic/cleaning-up-dirty-frames-for-scenes/id/14044
http://originaltrilogy.com/topic/Colorized-Classics/id/9758
http://originaltrilogy.com/topic/GOUT-Bugs-and-DUDSbtEoEE/id/14663
http://originaltrilogy.com/topic/Original-Trilogy-Extended-Edition/id/16618
http://originaltrilogy.com/topic/OT-Deleted-Scenes-Discussion/id/13307/page/1
http://originaltrilogy.com/topic/Star-Wars-Ep-4-a-New-Hope-Fanedit-will-eventually-change-name-NEW-changes-and-Images-added/id/16762
http://originaltrilogy.com/topic/Star-Wars-OT-BONUS-materials-repository/id/15985
http://originaltrilogy.com/topic/Star-Wars-Radio-Drama-update-in-1st-post-completed-review/id/7900/page/1
http://originaltrilogy.com/topic/Star-Wars-Extended-Edition/id/16611
http://originaltrilogy.com/topic/Star-Wars-The-Lost-Cut-Reconstruction-Project/id/16539/page/1
http://originaltrilogy.com/topic/The-Official-babyhum-Release-Thread/id/1799/page/1
have you ever look at these links?