Does the cursor go left when you turn the yoke to the left?
If so, you may need to hold it to the left a bit, and use the mouse to get into the calibration mode.
If it's miswired (shorted wiper on the pot), it shouldn't allow you to go left at all.
It will likely STOP the cursor if held full left because that will be a virtual short left, and right.
If it's just miscalibrated (probable, given that you haven't been ABLE to calibrate it yet), It should go left at some point.