I have exactly the same issue with mine. I have QA1 LCA's and the PST strut rods. Mine sound like a squeak/rattle at lower speeds but especially after applying the brakes. Almost like when the weight of the car is moved toward the front something gets loose and rattles. I tried QA1 strut bars but the LCA end of the bars was not 5/8" and it was impossible to stop the rattling. PST bars fit as they should.