XB4 rear insert problem

[OneKiwi]

Hi all
I had a look at the rear toe etc inserts on my xb4 and saw a huge difference in the difference in how far each arm was from the chassis.

For the moment I am having to hava a 1dot and a .5 dot just to get it looking right.

Anyone else had this problem or similar?

Could the RR or RF taken a bang? I have put them both on a flat surface and they seem fine.

Enlarged holes in the diffhouse?
Bent pins?

I have checked most things I can think of but wonder if anyone else has an idea or two?

Thanks
Simon