Originally Posted by
grammasharon
I have had this happen and because I didn’t want it to be uneven on the backing should it shift some, I added a piece down the length and off center so that I didn’t have to worry about it staying in the center and then shortened my length of the back added a wide enough piece so that it would compensate for the needed length. Hope this makes sense. Good luck with your project.
This sounds like a very sensible solution. I would be very, very reluctant to quilt a sandwich that was utterly even.