Of course after 4 tries by the dealership, and eliminating everything from a leak of the windshield seal, to a firewall issue, I was beginning to notice water actually spilling from under the dash over my left foot. Then I noticed it was only happening after my VX was parked in the rain on a slope (<8%) , nose down, in my driveway. It never once leaked in facing up-hill.

One final cascade of water in May, followed by an audible turn-signal "click" that was stuck in the "on" position, and the dealer was finally able to pin down the source of the leak to a poor weatherstrip seal along the door-edge of the "A" post!

They finessed a fix with a bead of silicone sealant and the problem hasn't (knock on carbon-fiber) returned.