Got fed up trying to get my carbon blanks to fit, so instead bought a set of these:
http://www.ebay.co.uk/itm/230671053606?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649
They work like a charm. They are only slightly larger that the hole in the bumper so dont stand out to much, and they seem to have stuck really solidly. I will have to see how they last through the winter and through a car wash, but having just stuck them on I'm well chuffed.
http://www.ebay.co.uk/itm/230671053606?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649
They work like a charm. They are only slightly larger that the hole in the bumper so dont stand out to much, and they seem to have stuck really solidly. I will have to see how they last through the winter and through a car wash, but having just stuck them on I'm well chuffed.