Unbelievable. I have a whole quilt journal of quilts I’ve made. This is not my first large quilt. I’ve been working on this all morning and I can’t believe it! My eyes got big as saucers when I read the word “seams”! I feel so weird having this backing problem. But your response came just in time for me to recalculate the next piece. I made a larger quilt this past May and got wide backing. Much easier. So thank you. Between your’s and GingerK’s responses I’m feeling more confident. I’m printing these out so I have the info for the next quilt. My memory must really be going. As long as I remember where my quilt room is I guess I’m still good to go!