Played around with this sim using my FSOne Adaptor and JR 9303.

I really like it, however the elevator on the 3D Extra seems to have too much throw and the rudder doesn't have enough. Also I don't know if its just me but I can't get a stable hover on it but this might be because the throws.

Also just wondering did you program this using some sort of C++ ?
I am in computer software development and love the fact you programmed this sim and made it available for free.