Calibrating CH Pro Pedals problem

I have CH Pro Pedals. One problem I'm having with them is that I have to do a full motion rudder action to get the pedals to center each time I restart my computer or else the rudder calibrationis full only at one side and empty on the other. Also in FSX, these rudder pedals stay slightly off center once I center them and it causes my aircraft to pull to the left when taxing or moving on the runway if I set the null zone to 0.Are my pedals behaving normal?

I used the CH Manager as well. It still has the same problem on the Z-axis which is the rudder. Whenever I restart my PC or rescan the devices, the Z-axis indicator will be at the bottom position and I have toplay withthe rudder in full motion to get the indicator on the Z-axis to center. It effects FSX as well, as I see the rudder flap on the tailfully rotated to one side after the slightest move of my rudder pedals and I have to do a full back and forth motion to get them to center position. It's all fine until I restart my PC.

It does it without CM Manager installed as well. I used to have a Sidewinder joystick with a rudder function built in and it didn't have that problem. My xbox 360 controller doesn't have that problem either.