The leak that filled the trunk wells with water was found under the SRT wing mounting panel. A foam gasket was out of place and allowed water to flow into the trunk. It was completely undetectable, as the interior panels hid the flow as well as its source. Your only indication of a leak may be a bit of wetness under the trunk floor panel.



And another view:



A less significant leak was around the wing stud o-rings:



A bead of silicone was used around the panel and around the studs to seal out water. I hope I never have to remove those parts, as they will be firmly stuck in place.