How to recalibrate the touchscreen on the Acer Iconia B1?

I've reset the g-sensor but it didn't help, when I touch the screen, the tablet doesn't read my finger where I touched. It has me touching just beside where I tapped. Any help would be greatly appreciated, hope to hear from someone soon.

Hmm.. Was the tablet dropped? I'm thinking that it may just need re-alignment.

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