Hi! I think this might be helpful to those who are not very technical (like myself!!)
I got this custom component based on the standard chain spring but replaced the spring nodes for gravity and exposed the parameters as attributes in the dedicated host.
I have been using it quite a lot and no problems so far. It is as easy as creating a spring chain but with gravity, ground plane collision and custom colliders.
For custom colliders you need to set it up within each node, adding the basic primitives to the colliders list/radius
You can download it from here, extract the zip contents to the shifter classic components and you should see it among the other shfter components.
Hope you find it useful.
Cheers.