Thanks for the suggestions. I'll check out my machine, however, I don't think that's it because I've used the same settings for other blocks and they turned out perfect. And I also checked that I was using a 1/4 inch by using the index card trick. The block was one that I found in a magazine and I copyied. It may be my copy machine didn't copy it just exact. But I'll try the scant 1/4 inch and see if that works.