This is a case where its necessary to not only known transmissions,but also the engine. anything made with hands can fail,That"s when you find out how GOOD your installing dealer and manufacturer are,Dukenrock. If internally fail ,it most certainly would have contaminate the rest of the Trans. Things happen and some are negative,Think about it, the owner has enough stress over the situation,why add to it with bashing his purchase. How about starting a NEW tread Like why do TC"s fail. That dealership has to one of the BEST,The dealer could has wash his hands of the matter and left you with the Ball. As soon as the tech remove the dust cover he would have seen it was a upgraded TC. I hope the truck is up and running by the end of today.