hi all sorry if this is in the wrong section . but i have a 1998 mk 4 1.6 16v astra and my power locks have been acting up a little the front ones work fine but the rear only work sometimes my left rear was working and now stoped and the right rear locks sometimes but then doesent open and then sometimes it does. wierd ....ive checked the plug on the door and sprayed some WD40 on it but no change . what could it be ??