@smellymel, I'm so sorry you have to deal with this. Our boat (2075 GL or now called the 20 GL) is docked at our lake house and we haven't been there in a couple of weeks.. Not sure what I will find when we get back! What I find interesting about your situation is the amount of water you had in the bins, 1 inch is a lot! Our boat has 2 equal sized loungers. So each time we found a lot of water in them, it was about equal (occasional wetness but once about 1 quart or so, another time a half gallon or so). I'm still trying to figure out where my water came in also. I'm not sure what size your boat is but when I look at the SLXP's online, they all look like the front loungers are not even. Some are actually small (like the 18' and 20') so the same amount of water I had might be higher in a smaller bin. I'm assuming you are lake or river docked. So knowing the boat has been covered, other than rain getting in from the inside, couldn't it also get in from the outside??! Our seats go down the floor but I don't know how tight the seal is on the outside part of the boat, under the panel. In that situation, the water would still have to seep in under the side panel and through the storage bins which you said seemed pretty tight. But maybe something is acting like a valve, lets water in but not out? In addition to the normal rain that comes down against the panels (when the cover isn't on), when the cover is on...extra water is shed off the cover and down the panels. Our storage bins have screws with large washers. But like Michiman said, our wire speaker holes were more open and caulked with silicone underneath the boat. The speaker hole makes good sense in my situation. You (or the dealer) may try like I did, splashing from underneath...and from outside the panel in your case. Maybe the water runs under the panel, between the floor and the storage bins and gurgles up through the screws or speaker hole.?? I can relate to your frustration. In addition to a lot of water coming over the bow on our first voyage, we also had some type of metal shield not properly attached. We had to remove it from hanging underneath (will have to be replaced when we return it to the dealer for storage). It was never screwed in enough....2 out of 8 holes!. Then this water in the storage bins issue has added to that! I'm glad we have enjoyed the boat for the most part! I did laugh picturing you under the cover, sweating it out. That's something I would do! I've had to crawl in to recover forgotten items. It gets hot quickly!! Hang in there and keep me posted!