WARNING: This page is about a different car, the 2006 Audi A8, 2005 Audi A8, and 2004 Audi A8. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Adjusting Front Double Clamps So Bolt Ends Do Not Project Over Lower Edges Of Double Clamps
Courtesy of VOLKSWAGEN UNITED STATES, INC.
When installing double clamp, ensure that bolt ends do not project over lower edge of double clamp.