Also Cap, I don't know if you know this or not but you can change the center point where your head sits in the planes now, as of a few patches ago. You pause the trackir, then move your head position where you want it, then f10 to save the head position, unpause the TIR, and look around to check your views. Once you get a good center point, then you can start messing with the profile curves a bit more to get exactly what you want. Getting it all tweaked out just right will take you some time as it's an extremely personal setup, like some others have said. Once you start getting close to what you're looking for exactly, then just start tweaking one axis at a time till you get where you want. That way you're eliminating variables as you progress. I have the roll axis turned off in my profile, I started out with it and eventually came to think that not only did it not add anything, but that it actually detracted some from my getting good views. Just something to consider.