e127 Requiring Frequent Touch Screen Alignments

[On Time]

For the last year or so my display has been getting out of alignment more often. Last weekend I could not get the blue reset boat icon riding in the upper left hand corner to operate. No matter how close to the left side of the screen I touched, the cross mark would appear about 8-10 mm to the right of the icon so it would not operate. 3 standard alignment procedures no change. It required two precision alignments to make it work. This was the first time precision alignment was needed to fix this problem. What's going on?