Help needed on my diff...

[RaceDiagnostics]

I opened up the back of the diff today to swap back in my rebuilt drive shafts and noticed one of the spider gears was lose and scored. I'm guessing it shouldn't be like that but know nothing about diffs. I've been watching for a replacement on eBay for the last few years but nothing so far, they are NLA and I doubt I'll find anyone to rebuild it.

Here is a video.

 

[Craig-SM]

I assume it’s a worn bush to create that movement. How to fix I have no idea.

 

[Blobber]

All the ones I've seen have a curved washer type thing like 26 in the picture

 

[500e]

A kit 4 / 2 gears new pins and shims

 

[Erie Fred]

Brought back memories of working on C clip axles from Chevy trucks......