I've updated the first post as I'm now going to use another source for a simple SD preservation of the 1997 SE in NTSC.

I'm currently working with the TB rips off the spleen, and ANH & ESB look great. I've only converted the films to NTSC/23.97p thus far, and haven't done any color correction or audio syncing.

I did add a grain plate on top of the video to cover up artifacts, but the smearing is still noticeable.

One issue I have is that the ROTJ looks the worst out of the lot. Color artifacts, dot crawl, and looks like it was deinterlaced. Does anyone have a better version of a rip of ROTJ (other than LD)?

Another thing, ESB has some noticeable EE compared to ANH.

Here's some comparisons: http://imgur.com/a/w9hg3