I am a retired Millwright(Industrial Mechanic) and, from time to time, in industry we had to repair just such situations. Find some Belzona, mix it and goop it on.

This is not a permanent repair but I have seen such repairs last for years under demanding adverse conditions. When one considers the stress this bearing assembly will experience, my guess is that the repair will last for a very long time.

Belzona is a two part product that mixes up into a stiff paste. Follow the instructions and see how it works. You can always file it off again if need be. There is, of course the concern of getting the bearing race centered on the steering stem, but once again, still worth a try. The cost should not be to great.

Hope this is a help and I have done it? Yup! And with good results.