Our Freightliner chassis sway bar links have tiny quarter inch threaded sections.Last time at the factory they replaced the rotted destroyed rubber bushings, they over tightened one, of them, with an impact wrench.Itwas loose but couldn't get it off due to stretched and twisted ends, August,, in Az Freightlner replaced the rubber and already worn bushings with urethane bushings and found it. Replaced both links,,,which were not easy to find.
Just tightening up things and those urethane bushings made a lot of difference