6.4L bed plate leak - upgraded gasket kit?
I just had a 6.4L bed plate leak fixed at the dealership. Took the truck in for a leaking rear pinion seal and asked them to check the oil leak at the motor/trans bell housing. After inspection, they stated it was the bed plate leaking and fixed both issues under warranty (truck at 42k miles). Service advisor said the bed plate leak issue is common.
My question is do the dealerships use an upgraded gasket kit or a different application process? Or are they just replacing the original gaskets? (there is a whole page of seals and gaskets on my warranty receipt) If it's just the same gasket kit that is already known to fail, what would prevent this leak from occurring again in another 40k miles? Cost to Ford was $3500 for both repairs.
Truck is a weekend snow & tow vehicle and not a DD so I will hit the 5 year warranty expiration before hitting 100k miles. I don't want to personally fund this repair in the future. Anybody know the details on if or how the Ford dealership repair solves the issue?