I bought base bars for the 2013 Allroad from Audi, part number 8K907-71-151-L. I've managed to lose one of the fasteners that is required to secure the base rail to the roof rack. I contacted my local Audi dealer and the parts department informed me they to not have parts for the base bars - great now I can't use my $300 base bars because I lost a $0.25 part.
Does anyone know where to get parts for the 8K907-71-151-L base bars? I've heard they are made by Thule, can anyone confirm that?

I would very much appreciate it if someone would be so kind as to post the parts list for these base bars as I stupidly don't have mine. I figure if I at least had the part number, maybe I could find it online.

Thanks in advance,
Mike