I have a 2001 C class and have just bought a private plate for it, however I cannot remove the screws for the rear number-plate. The top two have come off but the bottom two just will not budge. After spraying some WD40 on them I tried again and one of them now does move but won't unscrew it just keeps going round and round. The other still wont budge, infact the screw head is now starting to give way. Help!
