I'm not sure if any of your seat bushings have broken yet, but mine recently have. Oddly enough, they all broke within the same month. If you aren't already aware, these bushings are not a part that was serviced. Not that I'm aware of anyway.
As you can see in the parts diagram, these nylon bushings are not marked for the accompanying parts list.
In fact, the shaft/retainer that runs through the bushing and into the seat adjustment bracket is pressed in. Similar to a rivet, in that the inner tip of this shaft is pressed/expanded beyond the diameter of the hole that it was inserted through. So, it cannot be unscrewed, as there are no threads. Basically, it's there permanently. This is not to say that it cannot be forced out. With the right tool, anything can be removed, right?
As for the "fix/s", the first is, we can order these 3D printed replacements from a seller on ebay.
https://rover.ebay.com/rover/1/711-...0001&campid=5337789113&icep_item=193199722077
They are being sold as a set of 4, which will replace all of the bushings for both front seats.
Another option is one that I was conjuring up, before seeing the ebay listing.
The idea would be using these nylon spacers:
Since the outer "bushing" only has an internal diameter of 0.5", both will need to be cut into halves, then epoxied back together once they are around the seat's bushing shaft. My idea was to first epoxy the two different spacers together, as they are shown in the picture on the right.
Here are the measurements for the shaft:
With all of that said, I've ordered a set of the 3D printed bushings to give them a try. Once I get them in and put on, I'll update with my thoughts on them.