I haven't found one yet, I remember one Ford tech put up one that lacked much detail. But moving on, @Dijit had the exact same symptoms along with no help from Ford due to no parts available. I think I remember others here with the same complaint. Take a look at these three photos. This pipe carries coolant from the egr cooler to the water jacket on the engine. At the top is a small o ring. That probably isn't the issue as a replacement o ring is easy to find.
At the bottom of the pipe is another o ring (not in the photo) and again it should be easy to replace. The big problem is the middle joint which features a rubber sleeve. In Dijit's case the tech had ripped the sleeve but reassembled it anyway, and of course it leaked.
I hope this helps a little. Sorry you are having these issues, none of us should go through this.
ETA In one of the photos you can see tool marks where this pipe was removed with force, that seems to be part of the problem.