Well thanks to the bad influence of Mr Luddite I now have a Ducati Performance petrol cap.
Fitting is a bit of a faf as you need to remove all the panels covering the tank and, various screws holding the cap etc .
Cold fumbeling fingers and I dropped the first screw I undone straight into the petrol tank!! Doh!!
After that all fairly straight forward .
Bit dissapointed it doesn't come with black screws though.
New keyring also .