I have an 03 expedition XLT but I am looking to upgrade to an 08-12 model with a 5.4L since it is what falls into the price range I am willing to pay. I have had a couple of guys tell me to stay away from any 5.4L made from 2004-2010 due to a cam sensor problem. Is this as rampant of a problem as I am being led to believe? I hear it is around a $2500 repair which would be hard to stomach. Any help on how common of a problem this is would be appreciated.