The wife and I went to an outdoor show Sunday and I locked my doors for the first time since buying the car back in October 2006. We come back to the car and the keys won't unlock the doors ? It works in the ignition and the round key works in the trunk and glove box. Does this mean my doors were changed back when it was painted 20 years ago?? Has anyone else experienced this? Is this something that a competent locksmith can easily change without damage?