I've had water ingression above the passenger side window where there is a seam joint, it just drips in onto the leather seat and is causing damage to the cream/light grey leather (anyone successfully used a leather restorer?). I have purchased Renovo colour refresher and also the Renovo sealer as they were successful on my previous Brabus roadster. I can see the drainage channels are all clear and have used Gummi Pflege after cleaning all the rubber seals but the outer roof covering material gets absolutely saturated in heavy rainfall and this is overwhelming the drainage channels hence my trying to seal the outer fabric. Hope you get yours sorted.