This is a great thread to follow along with. People often underestimate rust and just how involved the repairs are. You've been lucky here Gary to find such a helpful lunatic to take this on!

Worn/ damaged brake disc, or tyre out of round, both of which your mechanic should have seen when changing the hub bearing

I know I should but I am an arse when it comes to trying to get things "right" and understand why they are not "right". A character flaw on my part I am sure. If other "mini-folk" tell me that this is not abnormal I can stand down I am sure.

They look very acceptable, especially as the condition of rings and bores is an unknown, if it runs well enough for your liking, leave it alone and go and enjoy it !