Our 2018 Sportsmen LE has an underbelly cover. A section has become wet and is sagging and we have no idea where the leak is coming from. Could it be the A/C or possibly the sink drain having not been connect to the gray drain hose, or possibly from the gray tank overflowing? The water is trapped up inside the insulation above the under belly cover. Do we need to remove it more to let it dry out or leave it alone? We have a fan on it. Thx