My Riviera has developed a nasty habit of locking itself on the driverside. If I close the door the lock will fall into the locked position. It won't do it each and every time, but it drops a little each time and it has a cumulative effect. I have power locks. Any idea which part is worn? I'm getting ready to pull it apart, but wanted to know if anybody has had the same problem and knows the likely culprit.
