When quilting on many layers of fabric you must use a longer stitch length. On the newer domestic machines a 3 and the older machines set at 4. The feed dogs can not handle the smaller stitches and need to take what they call a bigger bite to handle the fabric. This will keep it from puckering. Try a sample with a sandwich of muslin, batting and muslin. You will notice a big difference. Make sure you have your walking foot on also it will work with the stitch length adjustment and you will see the difference. Smaller stitch length will cause this puckering of fabric. Good luck. Sorry about the second post, it did not post the first time.
Last edited by Carol Jean; 02-24-2017 at 05:14 PM.