Thanks for the help. I will check that inner inside race against the grease seal. that may be it. I know the change from a thud to a ringing when the bearing gets home. I am pretty sure I would have noticed, but you never know. The hubs had the bearings removed and a thorough clean.
The failed bearing most certainly has uneven, possibly elliptical wear. If its a spindle I will need to find another. Painful.
Looks like a full stripdown so I can check the spindle is true between centres. The answer is in there somewhere.
