Default [Q] Pixel offset after replacing screen glass/digitizer?

Greetings,

I just replaced the screen glass on my LG P930 (Nitro) and I noticed that for everything I touch (icons, keyboard keys) I must touch a little above where it actually should be. I was fairly sure it's not just a matter of the phone being put back together sloppily (I did it myself and I've done this before), especially since everything seems to fit together tightly without a lot of room for play.

Anyone experienced this on a smartphone in general, and know a remedy?

Thanks,
Owen