Nick Stovold

Can any one point me in the right direction, I am trying to find some clips that hold the headlining to the rear window channel on a 2004 A4 cabriolet, really annoying that every time I put the roof down I have to climb in and reseat the headliner around the rear window when I put the roof back up. They are small metal clips that clip on to the headlining then clip into the channel round the window and stop it coming out again. Thanks in advance.