Looks like it may have been dropped?
If it still held oil, then just 'cut' the spot facing for the nut back square and user a shorter stud or even a bolt.
Ideally, you'd have the spot facing machined back, but you could also do a respectable job with a dremal too.
It may have been damaged being put on the delivery pallet? I was careful taking it off using the hoist but who knows.
I could have a go with the dremal if all else fails, I'm pretty sure it still held oil.
Thanks for the advice, appreciate it.
