Ford dealers lick their chops when they see a NGT coming through the door.
I had the creaking noise front rocker arm issue on my 2020 which was kind of odd since my car was built after most of the affected cars and already had the new shims and rocker nuts. The issue was diagnosed by reading of the rocker arm issue on the earlier cars. This forum was a good resource for running down what the issue was and a member actually downloaded the TSB and the involved fix. I followed the instructions laid out in the bulletin. Took off the appropriate panels to expose the area. The rocker arm nut was lubed and retorqued and low and behold fixed the issue myself. If I had Ford do this I'll bet it would have been at least a 5K bill. It also doesn't hurt to have a good local Ford mechanic you can call on for any advise they may have because of their familiarity with the ends and outs of the cars. We have one of the best guys in the country to do this. True there are many areas of this car that are above my pay grade and would be impossible to fix on my own but like a lot of other cars many things can be taken care of by yourselves. I hope this forum continues to be a good resource for any issues that may arise, for instance it's important to point out that you should keep an eye or should I say ear open for this issue even if you have a later car. As mentioned my car, according to the TSB, should not have had this problem but apparently the new nut put in by Ford on the line was not torqued correctly.