Hey Crumbso I'm not sure so far.
What I do is load each plane into the sim 1 by 1 and test them I've found that most of my jets work but I have some props that just won't show up.
And you're right I could have picked a better scheme I was really just testing out the plane.
I have found that those plane that do work appear much clearer in Fs9 than Fs2K2.