Well, 10 days later, and it's back. It was really prominent yesterday when the temperature hit the high 90s. I just dropped off the car again at Stevens Creek Subaru, so I'll update when/what I hear back. I'm starting to like this Forester loaner car they've been giving me, haha.
On the plus side, they're also installing my new OZ Ultraleggera's that I ordered from Tire Rack.
