Look at the shank under the actual ball for wear, this is where the cups ride and tend to dig in. If they are worn, now is the time to change them. Here is a tech tip I wrote years ago if you go with new ones,
https://www.stovebolt.com/techtips/draglink.htm I have since switched to the modern tie-rod ends for both draglink and tie-rods, they still work as good as the day I put them in 10 years ago or more.
I doubt the wear you have will be an issue, the springs will compensate for the out-of-round as long as they don't bottom out.
Mine originals were so worn, you could measure the out of round with a wooden ruler!
