I think it might be the batting. I don't like the old fashioned wrinkley look so I always use polyester batting which I get at Connecting Threads when it goes on sale. It is very inexpensive, too. I know that many do not like to use Polyester, but years ago when I got my first Bernina, I took a quilt class and the owner of the Bernina store recommended that kind of batting. At that time it was nice and thick and very very soft and was great. Now it is not as thick and not as soft, but I have had good results with it for both handquilting and machine quilting and it has held up well, and doesn't give me wrinkles when laundered. I use the new more modern types like Warm and Natural for runners and small stuff, but for quilts I use polyester. Hobbs is the company and 100% polyester--they have it in crib size, single bed size, queen and king size.