Wow Huey, I think you must be #2 for a leaking 16-17. I feel for you though as it's a crappy feeling seeing water coming in. My '03 rained harder on the inside than the outside!!!!
There have been sporadic reports on some of the "other" forums about the Sirius antenna being a source of water intrusion so maybe a quick check? Water can do funny things...I'm a plumber and I've seen roof leaks in buildings look just like a leaking pipe, 300 feet away! I hope that you both get them resolved quickly!
fwiw; I have large oaks at home and parked both other Expy's outside but only the 03 leaked. Now I have a canopy that I park under and have zero leaks anywhere and after my 03, I"m duley impressed. I wonder though, what role the exposure to the sap, pollen and rotting leaves had on making the other one leak?
jeff