That’s what I’ve had to accept as well, that my memory from 77 of the hangar scene, was probably re-manufactured later. The weight of evidence as I dug into it lately, does not support it being real.

Possibly in my case it was imagining in 77 that Jabba was humanoid, even though he was not shown. Given image by seeing a TV special or documentary later. With dialogue being so similar to Greedo scene reinforcing it (“hey I remember that dialogue…”).

Being annoyed in 84 watching ROTJ and seeing Jabba the slug, points to the memory being set-in before then. Or, less likely I was still imagining him being a human originally. Too long ago to know how it all happened now.

The dialogue similarities to the Greedo scene likely contributed to how easy it was to create a memory in this case. Its easy to see how the brain can use the audio as a reference point, to grab the video of that scene and insert it in memory.