Mine has had several problems. too. The rear seal leaked and they fixed it. They changed some other type of cold start sensor that gave it more power.
After my first oil change it runs like crap after I shut it off and restart it after a couple of hrs but it goes away. FORD unpluged the oil temp gauge and now it starts fine. Nice and smooth, But the fan never shuts off and it sounds like a tornado. So I plugged the sensor back in. I would rather deal with rough idle than the fan noise.
Otherwise it pulls like no other truck. Way better than the old 7.3L