as for the central locking going on an off, i'd say you may have a broken wire, usually the bit where the door hinges are breaks down over time. had mine done on a citroen zsara for 60 quid. the ticking I wouldn't even worry about, but people are different so it may bother you.. it could be numerous things. and as for the locking wheel nuts, just visit your ford dealer as i did with mine, a bloke came out with the right key and took them off, and he had 4 nuts for me to put in place.. all for a tenner in his pocket.. if not then they can be cut off an just buy a new set mate