Gear knob plate loose. 2005 Lib R-B.

Hi All,
Has anybody else had the small plate on top of the gear knob come loose on an 2005 R-B? By loose I mean it moves slightly, but does not feel like it would fall off. When I first bought the car, it was firmly seated and unmoving.
Can anyone describe how to tighten it?
To put this in further context I've borrowed a picture from another thread post - hope you don't mind me re-using this pips06
BTW nice cubby hole setup!
The loose part on mine is the silver circle with black middle showing the shift patten.

Has anybody else had the small plate on top of the gear knob come loose on an 2005 R-B? By loose I mean it moves slightly, but does not feel like it would fall off. When I first bought the car, it was firmly seated and unmoving.
Can anyone describe how to tighten it?
To put this in further context I've borrowed a picture from another thread post - hope you don't mind me re-using this pips06

The loose part on mine is the silver circle with black middle showing the shift patten.
