FYI, I made a synced AC3 5.1 track from ZigZig’s bit-perfect laserdisc capture, that will work with v1.15 at least; that one still has sync issues with the audio track, and it’s AAC, which is a format I’m not a fan of within video containers.
I sadly wasn’t able to retain the Dolby EX/6.1 configuration, but it’s still the laserdisc 5.1 mix, and it’s synchronized to Bobson’s v1.15 release!
Anyone who wants it, shoot me a PM. Thanks to ZigZig for giving me permission to share this.
(For those who don’t want to bother with that, I believe you can just apply a delay in mkvtoolnix to the audio; someone said -500 ms over at a different forum, but I’m not positive if that’s correct, YMMV.)