HVAC Clicking !!!

Hello Everyone,
Well i said i was going to get one of these Eights and i have gone and done it
She's a facelift 2000 W - A8 in Silver (I will find out the name later) and she's a beauty.
I have a few teething troubles to sort out, but that all serves as a little price to pay for such a cracking car
I was just wondering if someone could point me in the "Right Direction" for details on this repair for the clicking from behind the dash ( Yes its the HVAC flaps) - I have searched this and several other forums along with Google and have not found this elusive Fix - Please can someone on here enlighten me as to it's whereabouts for me and everybody else who needs it.

Thank You (One very Happy A8 Owner)