We don't own the right files for trying to get to save a class. It only works on redacted version or cracked versions. Remember, Plutonium is only for getting away from the cheaters, not making it your only BO2 to play ever again.
you go into settings, i forget the exact one but there is a in scope sense you can turn down, it will be i think in the same settings as your normal sense, maybe the fov sense try turning that on, with it off the sense in scope is the same as it is out of scope