While parked at a paved campsite, we experienced steady, heavy rain for a full day. The 5th wheel was level, all the slideouts remained dry, but the carpet in the aft corner (between the large rear window and the entertainment center, doorside) was soaked. No water was visible along any inside wall or in any ovehead cabinet - just the carpet along the bottom of the wall corner was wet. The seam along the roof and aft end cap looked good, as did the side seams where the aft cap attaches to the side wall. There were no visible signs of any cracks in the caulking anywheres along either seam. Anyone have any ideas where the leak might be?