u/Far_Swordfish5729

When it rains, my Camry always ends up with a few cups of water collecting in this black tray on the left side of the trunk. When closed, the left edge of the trunk is slightly higher and less flush with the frame than the right. My mechanic and a body shop looked at this and basically shrugged. How do I seal it? The gasket isn’t cracked and it still leaks if I clean it.