hans olof said:
One question: In this 1980 cartoon (which is based on the original script), Luke screams "NEVER!!!" when he falls from Darth Vader when he tries to get him over to the dark side. Was the SE- scream from 1997 closer to the original script than we thought?

I doubt it. That scream in the 97 SE was more of a "omg, I'm falling! This was a stupid idea!" type of scream. Not only that, but it was Palpatine's scream from ROTJ. In my opinion it was the WORST SE moment in ESB and I'm glad the 2004 DVD removed it.

Besides, "NEVER!" worked better in ROTJ.