Changed every other lock apart from the fuel cap!

All i need to know is how the hell to get the white inside plastic bit away from the green cap to reveal the lock!

Anyone got any useful ideas, already tried wedging it out with screwdrivers but there are 5 little catches around the circumference!

Someone please help!

have you got the key in the barrel?
pics?

I had a problem with my fuel cap, u have to basicaly distroy the whole thing. took me about an hour to rip it open, u should find a clip around the bottem of the barrel, after u rippit it open. unclip this and u should be able to pop it out, just rember DO NOT keep ur key in the barrel of u will be shaffed.