I am heading into my P38 fresh air intake plenum at the base of the windscrean this weekend to replace the filter but moslty to try and fix the source of water running into both side of my foot wells. The plenum filter is goone and it looks like there is a lot of pine needles in there. I am hoping to find plugged drain holes somewhere in the bottom of the plenum. Can anyone confirm that they exist. It looks like rain water is accumulating in there and then seeping over into my pollen filters and in through the heater fans. I understand its a pretty common problem. I have watched the range rover net video for the removal of the plenum itself and have aspare lower windshield finisher with clips. But are there drain holes in that plenum??