Hi - sorry I don't log in very often so I did not see your message before today.
Yes, they said they have a fix, but they have not tried it yet. They were doing a different one first then they were going to do mine.
They said there is a TSB out for the fix. the fix is to install some washers near the B Pillar. On mine you can push up on the head liner behind the driver and the rattle goes away.
I take my car to Hinshaw's in Fife if your dealer says they have never heard of this.
Good Luck!