The latest hurdle is today. The springs are getting fitted and when the garage came to the last corner, they told me the hub carrier had adopted a hairline fracture from when they went to remove the bolt.

Firstly, as the bolt holds this altogether, how safe is this? Secondly, after a few calls, I understand it is a genuine part only, so anyone got any contacts of where I can get a used one before I splash out hundreds on a new one?
Thanks