I have a 1998 buick regal and the key will not come out of the ignition right away. I have to keep the key forward and I wait for about 20 seconds and then I hear a click sound and I can take the key out. Sometimes this click does not happen right away. I had to wait 5 minutes one time and other times it comes out immediatley. I have sprayed some graphite in the ignition and this made it worse so I have to blow it out with a can of air. Maybe it has something to do with the anti theft thing. Any ideas for remedying this?