Here's another side I just thought of. Even though they appear to match up (the snowball and the 9 patch) on EQ I guess that doesn't mean they really do-the image is pretty small on the computer. Maybe if I did a giant 4-block quilt to see it would show up as being a bit off. When I think about it, the 2.5" does make more sense. I have plenty of scraps so I can do a quick block first. I need to do test cuts on my Go anyway.