Hello Our C70 now has two extraordinary workshop visits behind it. On the one hand, the Dynaudio system has brought our doors to vibrate – this has been solved with great confidence and now Premium Sound is even more fun. On the other hand, there are two more noises on the driver’s side: a trembling/vibration/springs/folding in the area of the dashboard, which is clearly audible in the case of floor waves. Then a quiet knocking in the area of the driver’s seat below; the knocking occurs almost always in the case of floor waves, load changes or simply almost always. Both noises definitely do not come from the roof construction… Does anyone know these sounds and there is a solution? Or did someone have similar problems and could they be solved? I am grateful for every advice, because we have already invested a lot of time in problem solving (of course at our own expense). Now the work is asked, since all the solutions specified by Volvo have no use.