My 1999 Beetle has developed an annoying problem with the drivers side door. Every once in awhile (sometimes random, and sometimes after hitting a bump) the door ajar warning sound turns on. The door is closed firmly at this time. I have tried to fix it by adjusting the strike plate so the door is closed "more" but that did not solve the problem. I can stop the warning sound by pulling the door handle inward when I am seated. A pain in my... Please help if you can.