Farmall Cub

I need help with my front spindle. Its the drivers side drop spindle. at the top where the keyway is it appears to be worn out keyway on the spindle not on the steering arm. has any body got any ideas on how to fix this?
I can probably take it apart and have the guys in the shop weld it in and cut another one if I have to.
does anyone have any spares?
Chad

If you have someone that can weld it up and cut a new one, that would definitely be my suggestion.