I have the latest TrackIR with latest software(v5.2 with track clip pro). It works flawlessly on AHII. It *almost* works flawlessly on the Alpha. Problem on Alpha is X axis head translation only when looking rearward. The translation view is "backward" from what it should be. In other words, when looking over, for example, my right shoulder towards the rear in order to see what's behind me and I then move my head to the left to get a better rearward view: Instead of my head moving towards the outside of the plane, instead it moves towards the "inside" of the plane which is of course useless and wrong. I will assume this is a bug with Alpha.