Just keep in mind that when the 4K83 optical audio was being synced to the print it was discovered that the actual GOUT audio isn’t properly synced to the GOUT video. Just as they screwed up and missed two film frames they also screwed up syncing the audio.
So really if you’re going to GOUT sync 4K83 you should properly GOUT sync all the GOUT audio tracks too since they are not even synced properly to the GOUT video.
The print audio can be accurately synced to the print since any audio dropouts you hear can actually be seen as to why they dropout in the optical audio track on the left side of the print. The audio dropouts are at splices in the optical audio track on the print.
I’m not sure anyone ever synced to the GOUT audio on purpose (the video frames are the reference, not the audio), but if so, sure. Some of the GOUT foreign language tracks aren’t even synced exactly to the GOUT English audio. It’s more likely every audio track has idiosyncratic sync issues, but none as big as the difference between GOUT and 4K83.
Not to worry, though, I’ll be using hairy_hen’s newly synced audio for the main English track, so the English sync will be just as good as 4K83.
The GOUT audio was always assumed to be correct but it’s not.
I don’t recall that ever being the case. I’d say it’s fairer to say people were surprised at how badly off it was, but they weren’t surprised at all that it was off. It’s Lucasfilm for goodness sake.