Guys, these are a 5/8” Rod with tap on caps and 3/16” steel wings, and these slide through 3/4” stamped holes in that steel. The wings should be tapped for a fit and they will rattle possibly on rough roads if the tension is not retained. That tension is from Slightly bending the wings. Year model has nothing to do with it other than they can have more time to vibrate loose and open the gap.