So, instead of doing something different, I decided to do the same thing (I don't know if the spoiler is needed, but...)
-Switched over to my XL ship and delivered the EC
-Flew west where the Flying Ware dump of Quantum Tubes, Silicon, and Nvidium was found (last time it was in the sector west then south)
-Loaded up the XL and flew 5km from Sohnen
-Sohnen accepts QT and Silicon, but not Nvidium
-Decided to cheat 10 Nvidium in.
-The first Nvidium in the list is the same as the Nvidium I had, nothing happened
-The second Nvidium was added, and this was a success.
-Now off to Paranid, who if they werent pissed already, certainly are now after I destroyed a bunch of their Demeters
As a side: I use the Revive Dead Ships script. Turns out Sohnen is considered a Dead Ship, so it can be interesting to find (basically idles looking for an enemy).