Replace them. What the hell, As posted its cheap,if the time is not exactly now it will be soon. After knocking the races out use a bench grinder and wear away the outside edge of both the inner and outer race. You really can't grind too much.Its the high (tall)side you want to remove. When you install the new race turn the old grinded race upside down. That mates to the face of the new race...Tap on..When the new race is seated your "tool"race will easily come out. Save them. I've used the same grinded set for over 30 years.

I would say it is just as probable if not more probable the lower ball joint has some wear. They probably are the origional ball joints. My 72 still has the origionals and the LF has a small amount of play, the RF is still perfect.