I have a 2014 Concord 301SS and noticed a small amount of water on the floor near the slide on two different occasions. I took it to the dealer and had a pressure test done. They could not find any leaks. Next rainfall there was water on the floor again. I did some checking around and found that the carpeting was wet where it wrapped around the floor of the dinette area slide. I pulled it back and saw water seeping from the bottom of the slide floor. I then called and spoke with both the dealer and manufacturer who both asked if it was parked on an angle (which it was because my driveway has a slight slope to it). To make a long story short, turned out that the window seep holes could not handle the rush of water caused by the sloped driveway and the water leaked down the inside wall and out of the bottom of the slide. Moved it to where I store it, which is level, and knock on wood, have not had any leaks since. Not sure if this is any help to you, but thought I would share, just in case.