The 8258 Outriggers. How they work?

Some have been intrigued how 8258 (Crane Truck) outriggers will work.
So I've decided to reproduce them, based on available pictures, to show here at TBs how I expect them to work.

It took me a bit, from the limited images and angles, to figure out some of which parts are being used, but here is it.
Also the front left outrigger at one of the most recent photos is misplaced... which made me a bit confused for a short.

Click on the image, for bigger detail view.

Both front and rear outrigger pairs should be running over the expected new rack, on top of each other, and also running in opposite directions.
Some in layered 8T gears, or similar, should take care these outriggers expand/retract simultaneously.
This horizontal movement is the only automated or motor controlled function, I expect regarding the outriggers.
Based on this construction, we should expect at least 4 of these new rack parts (if they confirm to exist) within this set. Perhaps they could be also in use at the manual extending boom and steering, which makes at least two additional (6 in total).

Because of the outriggers construction, being as expected and above described, they must feature an asymmetrical construction (both front and rear pairs).
Rear outriggers have also a slightly different construction, because they are fixed lower into the truck chassis.

The outriggers vertical movement and pressure against the ground, is manually actuated for each outrigger independently.

Below you can see some photos and one video, demonstrating replicas from these outriggers, as I see them being implemented.
The rack function is there just for illustration purposes, as we expect it to be a different and new part.

Main drawback of this design as I see it, compared for example to 8421 (Mobile Crane) outriggers, is that those implemented a kind of auto-locking mechanism while making pressure against the ground. These on 8258, are loose.