Also, If your TrackIR is in "enhanced" mode, it will re-center on screen, once the trackIR is re-read.
(ie... Fly... then get up from the pc and go get a cup of coffee...come back to the
PC sit down and the trackIR will center itself.. providing you didn't crash).
This started with trackIR2 with the 3.023(5?) drivers and is in the final products...
F9 is actually a "pause"...
...just a FYI incase you didn't know....
enjoy..!