69 dart quarter window

Yeah, I think all you need is the roller that goes on the ball side of the pivot. It should just press on, so you shouldn't need the whole assembly, just the roller (the bottom one on the picture). I had the same issue on one side of my car, but luckily had the other side to know what I was missing, lol. Pretty sure RT had them when I looked a week or two ago, I think $3-5 for one.