I am not sure what is wrong with my instructions. block 1 said to cut piece B 4 3/4 x 1 5/16. I found the 5/16 difficult to cut but when I had sewn the pieces together the outside triangles ( dk green) measured 6 1/2 but the white triangles were off set and that would be a square only 5 1/2. Obviously the rectangle measurements are not correct. What should the measurement be and are there any other blocks with similar difficulties.