I have one problem that is a little like yours. My problem is sometimes when I touch the right side of the screen, the device react that the left side was clicked. If so, I find a way to fix it. Taking the device with my two hands, and to wrench a little with the 4 corner of the device. If it cannot work, just try more. Everytime I can fix that. I guess that maybe because the screen and the frame are not very fit, especially when the temperature changes sharply.