Starting in 06/2006, Smaller Mounting Pin Diameter for the Shift Cable Retainer
WARNING: This page is about a different car, the 2009 Audi TT and 2008 Audi TT. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: From 06/06, Smaller Diameter Of Shift Cable Retainer Mounting Bolt