The other day my new controller came for my one year old P2, 3H3D2, H4, FS. I had installed the pot mod a few months ago to better control camera tilt. It worked well but I liked the idea of new controller wheel placement better. New controller wheel works fine but I did not like the spring loaded wheel centering movement. I wanted the camera to stay put and not snap back to the preset position when I took my finger off the wheel, after all, I am controlling the P2 as well. I found that the spring can be removed from the wheel mechanism quite easily. Just take your time. I then glued a small piece of plastic to the wheel center indent so my finger knew the center position (20ish degrees.) Calibration was dead on. Works great.