Scott,
I would be interested to hear of the NT's that have had failures. I have not seen any come through.
If the car is under warranty when the failure ocurs then it is repaired at no cost! Since replacing the companion shafts in my parents and a few customers we have not had any further reoccurences. So to me then problem solved!!
Name a car that doesnt have issues with wear and tear?? fow many manufacturers stand by their product for 5 years?? 2 Mitsubishi and Kia. I cannot comment on Kia but from the warranty claims that i proces i dont have many if any claims rejected.
Cheers Lee