Hi guys, just took a 306 in part ex. I have a problem with it locking. Every time i lock the car the locks to nuts. They go to lock and then unlock themselves instantly and makes one hell of a noise. The guy i had the car off said its been like it for months and that he has to lock it by pushing every button down manually. He also told me that it had something to do with little ball bearings Has anybody had the same problem? and does anybody have any kind of diagram?