One other item: My truck was built in January 2007 - among the first 08 models Ford built. I got a $1000 rebate check from Ford as a "thank you for purchasing one of the first" - kinda scary. I have been only once in a Ford shop for a regular oil change/service. I am sure they did not put any updates (at least nothing was stated on the bill to that effect). Aside from the possible excessive exhaust heat issue are there any important updates to consider? If so, is it possible that one or the other may contribute to the problems I am having?