The problem is that this McCall's block was made to be just a block (as for a pillow, maybe), rather than a whole quilt. What you need to do, is take away one column/row, from some of the blocks, in order to eliminate the extra columns and rows.
Here's a better explanation, of how it's supposed to look -
http://www.generations-quilt-pattern...t-pattern.html Scroll down, to the Triple Irish Chain.