I have purchased the 5 inch half hexagon ruler and am trying to make a quilt with it, but have run into a small problem. My hexagon ruler is bigger then my charm square! Is this normal? Will it screw up how my quilt comes out? At first I thought it was my charm square, since they sometimes don't come out exactly 5 inches, but when I measured both it was the ruler! It is an 1/8 of an inch too big. Anyone else run into the same problem? Thank you so much!!