I'm trying to install a brodit for my sat nav and I really hope I'm missing something. I've got the angled 'ProClip' and an adaptor for my sat nav (Navigon). In my possession I have two large pieces of plastic and 4 screws... surely you aren't meant to just screw the adaptor straight into the proclip? Incidentally I did have a quick bash with the screwdriver and the plastic is rather tough so I can't see those two going together without getting the drill out.