Ford made a decision to skip over development stage gates. That multiplied by picking the cheapest supplier (that has sucked for 20 years) causes a long delay.
I had a similar experience with the cam phasers on my wife’s expedition. Not nearly as long as your ordeal. I called the 1800 number and in a humble, I’m in need voice asked for help. They responded and I got an extra 36000 mile 4 year bumper to bumper warranty added to the 3/36. I suggest...