Re: German dubs. Short story: No adjustment is necessary.
Long story: I’m not actually sure of the origin of the German dub on DeEd. If it’s from my collection, it’s actually synced to the PAL GOUT, so it will be missing one frame of audio from 4k83 and will technically be more closely synced to 4k83 than it ever was to the DeEd. If it’s from elsewhere, it may be synced to the NTSC GOUT and be missing two frames of audio. The audio from my collection has the German loudspeaker announcements when they’re walking to the elevators with Chewie pretending to be a prisoner, the others tend not to. Also, my track does NOT feature any scored music during the trash compactor scene, while the THX remaster and some reconstructions do. Regardless of the version you have, none of these options would present a difference large enough to notice, so would not require any change to work seamlessly with 4k83.