Have an Omega Bj98 (CD Reflection), which is constantly in the front area, I think in the suspension, knocks, when I drive over cobblestones, Gulli lids etc.. I have had the problem for a long time. Now I had the thing laid deeper in a few weeks ago, so have new springs, dampers and also cathedral bearings installed with the hope that the knocking is now gone. Think! The workshops, both Opel and free (have already 4! on top of it) ucht) find no obvious mistake. Does any of you have experiences with this problem?!