I recently noticed a problem with my TrackIR 4 (with vector clip and software v. 5.2.200) when I switched to zoom on z-axis. Whenever my head isn't pointed directly at the screen, I cannot properly zoom in. It seems the game (or software) has a hard time recognizing weather I'm trying to zoom in or move my head sideways. I find myself having to move my head in a weird angle to get the game to zoom (towards the nose of the plane relative to where my head is pointing in-game.)
Its kind of difficult to explain, hopefully you guys understand and have a solution for this?