I just picked up my 91 about 3 weeks ago for the winter. The little button you have to press to release the key from the ignition seized on me today. Nissan said it could be a couple different things and would be at least $300-$700 to fix depending on what was wrong. They suggested to just leave the key in the ignition all the time and use the spare key to lock/unlock the doors. I do not want to do this and was wondering if anyone had any suggestions of things to try? If it comes down to it, I'll just pay to get it fixed, but want to try all options first. Thanks in advance!