Water flows at the C123

Hello together, with thorough washing of my 230ce a few days ago I noticed that the seal of the right rear light is no longer 100% dense. New seal is ordered, will be picked up and installed on Monday. Apart from that everything is unfortunately dense (backpane seal has been made recently). However, so that this remains so, I would like to check once all the water drains present at the C123 for possible constipations. The water seems to flow from the sliding roof forward into the A-pillar and then comes out between the fender and door, to the rear it flows out below the rear side windows. Then there is a “gumminase” at the bottom of the threshold. Everything in the area of the hood hinge pockets is also free. Where are there still procedures? What if, for example, water enters through the disc seals of the rear side windows (100% densely there are not undeings) – where does the water flow off? Thank you and all of you a beautiful Sunday! MfG Jablonski