I’ve had a look and it’s working ok in SU5 as far as I can tell.
Anyway the rikoooo installer did me a favour really.
After 2.5 hours downloading MSFS again, it’s actually working better than before. I’ve figured out where my problems have been with the sim lately and although it is SU5 related I can fix it as it’s down to a certain add-on I’ve installed.