After dealing with a very slight sticking in my ignition key while starting, I decided to try a cheap fix first beofre it got worse and had to go tearing into the dash. I went to my local hardware store and picked up a small tube of powdered graphite lubricant. This very fine powder is used in home and auto door locks to lubricate them. A few small squirts into the key cylinder and a few turns later, it was noticeably smoother. Ran a few errands last night and today and so far, so good. Even fixed my sticky patio door lock. Be careful as this dark gray powder is very messy.