I'd like to know what MB would pay for the same job if it was done under warranty?
I'd bet it would be at least half as much if not less....
The only problem I have is with the original cost of $700.00 dollars in which they did nothing. They work on the cars all day long, they know the cars pretty much in and out, at $100.00 dollars an hour, to spend 7 hours to let you know the whole thing needs to be replaced they should be shot.
At the most one hour to decide which direction to head in, christ, I could tell you in two mins if we replace pretty much everything the damn thing will work.
I'm a service manager at a Chevrolet dealership and I see this stuff all the time, no wonder most people are scared to death of "dealers"