Got a new MMR block and was trying to put on my timing chain guides when I noticed I needed dowel pins. Went to a Ford dealership and they stated that all dowel pins now had one part number. So I ordered them and they seem to be too short. The guides really look as if they will slide off at any second and I am not familiar with any of this. Plus now I am going to have to get that dowel pin out of the block if I have to get a longer one. Frustrated! Any one have a clue on this?