I am sorry for posting this… I need help with information from experienced sails men… I am a newbie, however, I am hooked. Even when I seen the floor fill up with water. I still wanted to sail. I didn’t want to go in. You see I am in San Diego, so once I got out of the harbor into open ocean. I have never had so much fun. Furthermore, sinking could become a big problem. So I came to the experts. I will check this valve because the other compartments were clean and the bubbling seems to be coming from the corner facing the toilet area. I will check into where it is located and how to check… If you have any advise throw it my way.Thank you Michelle