had a 2014 x 19 back compartments leaked . Got a 2019 x21 I thought the lip would stop the leak I was wrong. So today with not a lot to do I took a long look at it . I found out it leaks around the bottom where the lid attached to the boat. I plugged the drain hole and poured water in around the lip leaked bad. So I had some 3m 4200 (black) Boats black so can't see but I sealed all around the compartments on both side. I am 99% sure it has took care of my leak. Let ya'll know for sure next time I wash my boat