Yes, I have recalibrate the joystick many times every time I do the test. I even swap USB port just to make sure that the USB port where it was connected was not faulty. So far it is good.
As for the +/- why it was like that is because when I move the joystick a little bit to the left or right, it doesn’t make any difference at the moment if the turning radius is set to small or bigger. When I start taxiing the B787, if my joystick reach the dead zone, the B787 will stop moving. This is the characteristic which happening at the moment for this model and FSUIPC7 solved it by assigning tiller to the aircraft. Unfortunately in this case it doesn’t work any more now.
Based from the picture attach, what is the exact number should be in the In/Out column? This is because when ever I twist the joystick left and right. The number for In/Out keep changing from -130 sometime 0 (in) 0 (Out), sometime In (128)/Out ( 0 ).

Now, its like this.

As for this section, I reset the data and it shows like below now.

The handling of B787 are still the same despite the numbering captured on this section and the one above.
I’m not sure what else to do.
Update:
I did a little bit of practice just now. When I make the turn, should I twist my joystick all the way to its dead zone or just merely twist it a little bit as long as the aircraft make the require turn? This is so hard now LOL. Playing sims/games now require more troubleshooting LOL. What happens to just install, run and enjoy the sim 
