i looked into doing this project myself a little while back and the problem with the amc footage is not just that it is censored and has the watermark, but also numerous advertisements are played on screen which unfortunately happens during some of the extended scenes, which makes it impossible to remove it unless it is somehow photo shopped out. I would recommend using ModernKnifes version of the saga as a template because it includes footage that amc never restored, although in low quality, it still should be included for a sake of completion.