I just took a look and listen, and I think this is as good as it needs to be. I noticed the minute difference in the cymbal crashes that you noted, but the Kostal recording is so different who's to say it wasn't always so.

Looking through all of your uploaded videos, I remain impressed with what you've accomplished, and it goes a long way in explaining why Disney didn't include this recording as an alternate track. The 1982 edit must have been quite different to the one we are used to seeing, and it's too bad we don't have a bootleg of it to reference.

Instead of filling in the gaps in the 1982 CD, perhaps you're better off just taking the missing parts out of the video entirely. Would that be too jarring, storywise I mean?