You can find the broadcast, Flunk '97ANH on usenet, it have a couple of corrrupt frames in it though.
There is some heavy motion smearing on the broadcasted versions, especially the scenes in the canyon with Artoo, is it something that is also on these LD's ? It's even worse than the Gout in this scene.
As have already been said, the '97 ANH is dark sometimes, pink sometimes and blue shifted in other scenes, but it can easily be corrected compared to the horrible '04 DVD.
Your caps looking promising!