The descriptive audio tracks I had, I just transcribed the description (with edits for despecialization, inaccuracies, etc) and the tracks are long gone. If I recall correctly, cutting them to match the GOUT (the frame reference for the Despecialized Editions) might be doable, but not without even more compromises than we already make for despecialized dubs. For example, in a dub, we replace entire sections of the audio in Jedi (musical number, celebration). Easy enough when there’s no dialogue, but the voiceover would be lost. Same for the credits, none of the scores for the SE credits match the originals.

For better or worse, I’m pretty married to the “make our own” idea. I’m willing to wait a long time for a volunteer, but feel free to ask around on my behalf.