I have this happen sometimes to but I don't let it bother me. The front looks good, then I am fine. I do not spray starch any thing on my quilt. I love the softness of the fabric and batting. I tried it one time and sewing with "cardboard is not my thing. In all the years that I helped My Grandmother make quilts, not one time did I see her starch her quilt blocks or quilts. Just enjoy the the quilt making. There is only one who is perfect!