Hello, I’ve been “knocking” from the back of my 98 Anni CSE for some time when I’m driving over floor waves. I can rule out the shock absorbers, they’re new. First I suspected the rear shelf that it’s bouncing on floor waves. Out of it, but still clapping! Then I cleared out the whole trunk with the tool on the right, also no success. Now I suspect the whole tailgate! I left it open once, drove it and saw The sound was gone! I then examined the lock, but all the screws are fixed. However, if the lid is closed and I pull it up and down, it really seems to be clapping somewhere in the lock area… If there is a known problem, you have had it before and what can I do about it? Maybe there’s a very simple trick that I can use to eliminate the annoying flapper, because it’s really annoying during the ride… Thanks for your help. e Help and Greetings, Jens