Mont Blanc Barracuda bike racks

Hey all.

After a couple of laps of Appin the other week, I realised I have lost the key to my Mont Blanc barracuda bike racks. This could be a bit of a long shot, but was wondering if anyone out there in Nobmob land might have a spare floating around. It's the black plastic type (number 47) that locks the clamps around the frames.
I've tried a couple of roof rack shops but haven't had too much joy. We managed to pull the bikes off, but the clamps are locked so can't really use them at the moment.

Any help appreciated,

Cheers, Dave.