I have one question.......how can I change the settings to make it easier to look behind me in the cockpit??

If you don't like that, you can change these lines:

else
  FakeTrackIR.yaw = (vr920.Yaw - var.offset)
  FakeTrackIR.pitch = vr920.Pitch
  FakeTrackIR.roll = -vr920.Roll
end if

by multiplying each one by a number greater than 1.

eg.

FakeTrackIR.yaw = (vr920.Yaw - var.offset)*1.6