Posey Bell - I had to look at your blocks and they are beautiful! As far as the size the ones that are close to 12.5 is it a matter of pressing? You just might get them to 12.5. The 12 inchers might be to small for those that are putting blocks together. Sometimes you can cut down others blocks but if there are points you will loose the beauty of the block. Really don't know what to say on those. It can be frustrating-but remember to do a scant seam that way they come closer to the correct size. Beautiful work!