Thanks IHC. I gotta go look at that cuz I am not following your explanation. Yes, it was a fat 90 zerk. Don't see why the one stayed on the passenger side. Yes, it's 4x4 and it's been used a fair amount the past 4 months. do you think I'm going to have to remove the ball joint to get a new (ground) zerk in there? Ground on sides, right?