Help! I have never had any issues with drawing out lines to a specified length. For instance, when I am drawing a line to measure 18’-101/2" it’s drawing it to 22’-21/2". I have tried typing the measurement in several ways. With no dash in between ft and inches and with a dash. It does however seem to draw accurate dimensions with no fractions. So if I draw 18’2" it works to that correct dimension. It’s when I input the fraction is when it does not draw correct dimension. Can anyone help with this problem?