Hi there.
Having read the last few posts a few times, the so called factory option involved (as far as I know) making the patchbay to suit the needs of the initial first client at the time the console was built.
So, to feed a 3348 Sony or multiple 24 tracks, the patchbay wiring people at SSL would normal the first 24 channels down to the multitrack record inputs as standard. Then, they would cross link Group output 25 to 49 for instance or somewhere else and those too, would be normalled down to the respective multitrack inputs so Group Output 1 could also feed 25 or 33 or 41 on a multitrack at the same time. This was not that uncommon in the mid to late 1980's as the consoles grew in size.
You can achieve this on the patchbay, without patchcords and parallels (or mults, which is a German term I believe) , if you are willing to spend the time cross linking the patchbay somehow to suit your needs.
This means taking some of the twin screen wires off, desoldering the jacks to some extent and adding more kynar type red and black wires to the other channel jacks on the patchbay so you can link 33 to 41 etc internally on the patchbay.
This is how I understand your problem and, if I am correct with this, it can be done as detailed above but it does involve some downtime of course.