R8 4s Polter/Klocker noise VA

Hi, for some time now I have the problem with my 2015 610 PS R8+ or knocker noise in unevennesses from the VA. I have the MR suspension with KW threaded springs. If I only walk lightly on the brake during stronger unevennesses the noises are gone. We have already replaced rod rubbers, but they have not been. Coupling rods are also good in shot. Also cross handlebar rubbers look good. Car has run just over 40,000 km. Can only imagine the MR dampers that the piston tan looks good. It is not so good to read about the MR dampers. It comes primarily from VL but later also from VR the unpleasant slightly metallic sound. But in dynamic mode (wheelchair hard) is better or at first not to hear at all… But after a few km also in dynamics (damper mode hard). Before I order a new chassis, I wanted to ask you again for advice/tips.