Despite replacing the windshield and rear window seals, the door window seals and the sunroof seals, water still puddles on the floor of the front passenger compartment. I have looked at the drains under the hood hinges. They seem to be clogged but I can't get a wire very far into them and it seems impossible to blow them out with compressed air. Where do they exit? Can one clean them from the underside? The repair manual on CD I got from Mercedes is no help. A lot of the information (visuals)on that CD is very bad quality. Where else should I look for possible water entrance points?