hey , I had to water sloshing noise in my xfire too . You may have 2 issues but the sloshing is a the drain hole in the door is clogged. I'm the second owner of my xfire and the window on that side was broken b4 (I didn't know this). I took the door panel off (easy to do) and there was like 2.5 inches of water in there! I got the water out and had some tools (like an ice pick with an angled end) there was a tiny bit of glass in that hole and a small leaf and pollen out the wazzoo . I clean it all out, sanded the rust that built up, sprayed some self etching primer in there and then sprayed a coat of bed liner in the bottom, poked the holes through again and its been fine ever since.