Once again you only have to do what is in your LBS. However if you wish to have your aircraft in charter cat and you have your lbs in sched 5 you will have to change it to manufactures insp and all that go along with that.
Think I'm wrong about SB we'll I think not I had a big win in court as an expert whiteness against casa on that very thing. Plus several other points of law that they said was law but wasn't.
Cheers