AS A NEWCOMER TO x SERIES CAMERAS AND TO MY RECENT PURCHASE OF A FACTORY REFURBISHED X PRO-1 I AM EXPERIENCING A FRUSTRATING TENDENCY TO UNAVOIDABLY TOGGLE THE QUICK MENU BACK BUTTON WHILST HOLDING THE CAMERA SO THAT IT KEEPS INTRUDING INTO THE VIEWFINDER WHILST COMPOSING A SHOT. wHAT AM I DOING WRONG?