tazman, this topic has been given a more concise title and you can find it covered in better detail under the title

TrackIR in Prepar3D working like back in the old days (teeny tiny tweak that makes the difference)

Anyone tried the trick under Prepar3D version 1.4?

By me it's not working anymore...

Its working for me, TIR5, Make sure you compile the changes and them save them.