Driver Airbag Unit - Rattling

[Guest Chilie]

I have progressivly been ironing out the niggles with my 2001 C5 2.2 HDI since purchase in December 07 and im left with a rather annoying rattle from the steering wheel. Its the Airbag / Horn button in the centre of the wheel and its spoiling an otherwise rattle free car.

 

My question is really has anyone else had and resolved a similar issue, looking at my Haynes for my picasso although they look the same it seems to be fixed differently - C5 just looks like some plastic spring clips where the picasso appears to be screwed down from the rear.

 

Am I likely to be able to adjust anything here if I go to the trouble of taking it to bits or am I looking at a new unit to fix it?

 

Thanks