To true Atom for all there issues manging the things on start up they really are a cracking engine. Use 20% less fuel than the free turbines as well.
There is always a slight inbalance but then again there isn't an airframe after 15 years old that flys straight either.
If you gave a crew a straight airframe and engines perfectly in balance and all the other good stuff the crew would more than likely think there was some thing wrong with it.