Quilting problem - machine stitching issues
I have quilted many quilts but this one is driving me crazy. I pinned it all about 4" apart. Then had some waves on the backing - fixed all that and it looked smooth and ready to go. I am just doing lines diagonally but it is stretching out and by the time I get to the other end I have to unpin everything and smooth with my hand while holding the fabric for stitching. It looks so bad. Sometimes I have had wrinkles sewn in. I unpinned it again on the side I am quilting and carefully pinned about 2-3" apart...and it is happening again. Do you know why?