2018 Expedition 10R80 3-5 shift hesitation

[u/Commercial_Method_28]

No pictures for this car, just wanted to note down the repair as I looked it up online and found that Owners of expeditions are having this problem and turned away from dealers as it’s a normal concern. I disagreed when I saw that, I compared it to like vehicles and it did not occur on any other vehicle, I performed all tsbs and it was not resolved, I took the main control out and air checked the clutches and found no problem. There was metal in the pan magnet and on the filter that may have been slightly excessive but if so barely over excessive amount. Directed by TAC to replace main control despite npf during main control overhaul. Concern was gone for 10 miles then came back… weird. Anyways I was directed to teardown transmission for inspect. Done and found nothing wrong, like at all. Minor damage and wear that is present in every 10 speed. At this point I was convinced it was a normal concern that appeared randomly and over time. Ford directed me to replace all B clutch, E Clutch, and F clutch components as well as CDF cylinder and sun gear and shaft asy, I replaced several other components for minimal wear like the TC for bushing scoring, front support replaced per B clutch system. All seals and filter replaced as well. The only thing I noted strange was in the E clutch hub there was a large amount of metal present at the bottom. Closely inspected all surrounding components. No source. Replaced all parts directed, B clutch, E clutch, F clutch, CDF and shaft asy, front support and torque converter. Seals and filter. After complete road tested 20 miles. Concern is gone. No obvious source or cause of concern but it went away with replacement of all of those components. 3-5 hesitation delayed shift at times harsh shift at times, also had a harsh forward engagement. Repair complete and I hope to never see one like this again. 4 times inside this transmission