OK, Just completed this process to my 2012 Nexus 7 WiFi that has been having "ghost touch" issues. A little background.... I got this Nexus 7 free from a friend, because the screen was cracked. Purchased a $65 screen + digitizer from China through eBay. Replacement job went perfect and I did not have "ghost touch" issues for the first 3 weeks. Now, after many other possible culprits like OS updates, moving to a very humid climate in Mexico, and multiple app installations... the "ghost touches" are rampant.
This repair seems almost too simple to be true, but it works so far.
I will come back and REALLY REALLY THANK YOU after a few more days of testing.
December 3, 2013