micbug

Hi to all, I have changed the digitizer on my wife's galaxy ace,the phone works ok apart from when you want to write a message than she has problems because the letters next to the ones she wants keep appearing as if the screen is not calibrated properly.I have done the horizontal calibrating but it still does not work properly.Also sometimes you have to press hard on the screen for it to do what you want it to do.Has anybody had this problem and if so can you please help me.Thanks and great forum.