Unless it involves warranty on something expensive, we just do it ourselves and if we need a CANbus address programmed in, I call them out to do that for the minimum charge. If I do get them to do something, I check it after pretty closely.

Had a guy out to install a turbo on our 7630; he hadn’t tightened the collar for the oil supply, if you can believe it. I did talk to the service manager about that one, that was pretty egregious. Like really, on a turbo, keeping that oil bearing pressured is probably the only critical thing to watch for.