Mercedes SL R230 2008 Luggage compartment leaks

Hello, next problem with my SL. When opening the boot cover, I noticed that the rubber seal was leaking at the transition from the rear window to the boot on the left and right. There were always a few drops of water on the underlying velour lining. I then raised the boot floor and found that the felt part underneath was also wet in the depression. Under the part is then the entire electronics and control for the Ca briodach plus Battrie. There it was also well moist. I then dried everything and covered the complete control modules and the battery with lots of newspaper and off to the friendly. They then made leak tests and replaced all trunk seals. The annoyance with it: they checked properly with water for leaking and also found that it was leaking. But where the water then ran, she obviously did not care. When I removed the car from old and looked at the bottom of the trunk, where I had laid down the newspapers, they were soaked. Without the newspapers I would have been country under I then preferred to dry everything myself again and laid out again with newspaper. Today I am then at the friendly through the wash road. All dense. Greetings from the sunny Rhineland Rudi