calibration fails when starting values are unusual

[craig22]

Calibration fails when initial calibration values are set to unusual and improper values:
[1]
xinput set-int-prop "Elo TouchSystems, Inc. Elo TouchSystems 2700 IntelliTouch(r) USB Touchmonitor Interface" "Evdev Axis Calibration" 32 0 1000 0 1000

[2]
xinput set-int-prop "Elo TouchSystems, Inc. Elo TouchSystems 2700 IntelliTouch(r) USB Touchmonitor Interface" "Evdev Axis Calibration" 32 0 0 0 0

[3]
xinput set-int-prop "Elo TouchSystems, Inc. Elo TouchSystems 2700 IntelliTouch(r) USB Touchmonitor Interface" "Evdev Axis Calibration" 32 825 3246 1151 2124

xinput_calibrator doesn't work in these cases.
[1] The first target accept a touch, but the second target touch is rejected as a mis-click.
[2] The first target accept a touch, but the second target ignores all touch attempts and resets the timer.
[3] All targets accept touches, but the resulting calibration 422, 3648, 990, 2283 is not even close to being correct.

When properly calibrated the values are approximately 0, 4000, 0, 4000.