hole where front strut rod attaches to the K member problem

65 cuda /6. The hole in K member where the strut rod attaches has been worn out of round. It appears there is some sort of support washer, if so, can it be removed and replaced or should I just fill weld the worn area and grind it into proper shape? Thanks for your input.
I'm not a very skilled welder, but I don't see why that shouldn't work.