Can someone give a few names?
Also, if anyone has any ballpark cost examples?
I'm asking because my top full level is turned up to max and at 17500ft the left engine is about 20 degrees lower than the right one. Someone suggested you could probably just change diaphragms or service it, but not sure if that's possible. Maybe it's like piston engines - once you open them you're pretty much committed to an overhaul.