Attention all hands. I did not read through the entire thread chain, and am only trying to be helpful. Water ingress at the Model Y rear hatch is usually a sign of missing seam sealant from the factory in the hatch and/or tail lamps or missing gaskets. This now a known issue at Tesla. Unfortunate to see folks getting the run around at their local SC. Please hold them accountable. This is the way that will help them improve their service and QC standards.