Default mega 6.3 touch screen issue

I recently changed the LCD screen on my galaxy mega 6.3. The screen works fine except for sometimes it starts to twitch when you hold your finger in place on the screen. I tried a few calibration apps that did not work, factory reset the phone that did not work. So I recorded a small video and post it on YouTube showing how it twitches. Check it out and let me know what you think.
http://youtu.be/TPauGAYCcyg

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