Turbo and heat shield and, and, and, on my 2000 H-1

[MickerH-1]

Any help or comments here? I was driving with no load and suddenly the right side of my 6.5 T.D. sounds a LOT louder than it was a minute ago. I take it to my dealer cause that's what I do and am informed that the turbo intake pipe was cracked or shattered and the heat shield needed replacing. $1,600 or so should make it a happy truck again. Mind you this is a wagon with 29k miles on it and has never seen dirt before I owned it, let alone my offshore boat. I then get a call that they broke the exhaust bolt off of the exhaust manifold and now they have to remove the entire head to access it and repair it. NOW the bill is $4,800 because "exhaust bolts sometimes twist off". Maybe on an old car but NOT on one that is a little more than three years old! My question, has anyone else had this problem with the turbo pipe and heat shield? Should a technician use any kind of thread solvent before cranking away on an exhaust manifold bolt with an air wrench? I the years I used to wrench on Vw's, Porsches and Ferraris I have had my share of bolt shears, but I never heard of making the customer pay for the damage.(I guess they could have called and said it was already broken, hence part of my problem) Also the service advisor hinted that he saw evidence that the turbo may have evidence that it is leaking, but they haven't gone that far yet. What is up with the turbo on these things? I have owned it six months.