my 97 x is sitting at the ford dealer right now ..i complained and complained about the rattle on cold start up for the last couple of years and last week i took my ford 350 service truck to a ford truck service i talked to the manager about the marbling sound on cold start he told be to bring in my 97x and if it wasd bad he would try to get me in on 0m1 tsb....ok so they find my cam chain tensioner is leaking by.. so the suprise is that my ford was done on the recall already ..i have the metal chain guides and the updated tensioner...so he's recommending that i change the tensioner and the cassete...estimate of 650 so far...i