Touchscreen Calibration using Elo Touchscreen Linux Driver

I have installed Elo Touchscreen Linux Driver - Version 4.0.1 following instruction indicated in this link:

I have tried calibrating multiple screens and everything worked fine. Target screen showed up, I clicked on the first target, then second and then third target and calibration finished successfully.

However for one of the screens, when target screen showed up, I couldn't touch the targets by clicking exactly on the location of them. I needed to touch few inches away from the targets to make the click happen.

Why did this misplacing happen and Is there anyway to copy calibration data from one of the screens that works correctly to this screen.