It's been a while since I retried the attempt. If it fails again, I can offer to ship the problematic disc/s to you.
If by some chance you have it, I've been attempting "Legend of the Overfiend". "Urotsukidōji".
These are original discs, not downloads, for those that are worried about the source material
I'm importing directly from disc this time. Perhaps that will have a better result
Before, I used DVD shrink, to create a single large VOB file. (mmm... I recall dvd rebuilder not liking large vob files)