I just completed a quilt top using a jelly roll for the blocks and muslin for the sashing strips. Since I didn't preshrink the jelly roll fabric my plan was to quilt it with cotton batting then shrink it all together. Unfortunately, I realized after I completed the top that the muslin I used for the sashing had been preshrunk. Now what do I do? I'm afraid if I go ahead and quilt/shrink it, my sashing strips are going to puff up.