check the ball mount on top of the coil over assembly. its probably seizing.
If it is, you can take it apart and grease it. Ball joints need grease,
otherwise they make a clunking noise when pivoting under load.
For the springs, there should be a large washer or ring that sits on the
bottom and top of the spring to keep it rubbing again’t the collars. If your
missing that part, then just apply some grease to the top and bottom of the
spring where it rests. It does get messy over time, but oh well. Its all about
function.