Is it just me or does anyone else have problems with calendars(all of them) curling at the top corners? All of my calendars do this. The 2013 calendar I just took down, you can't even see the pictures anymore. The edges are curled down around it. I've always wondered why they only put one hole in the center instead of one at each corner. Maybe my house is too humid in the summer? I'll probably add new holes in this one so it doesn't happen.