I have a 2005 base model and in the Maintenance Logbook it says to "Retighten steering locking bolts" at 50K or 4 years. I have poured through the service manual and searched the forum. WHAT is a steering locking bolt? Is this just something really simple I am missing. There are bolts for the steering gear, but I can't imagine those needing retightened as a regular maintenance items. Any body, please help?