Are you using a high loft batting, maybe the Kenmore doesn't have the power to pull it through. Maybe a little more pressure on the foot? Longer stitches should help and reducing any drag is all that comes to mind. I set up two ironing boards beside my table the machine is on. One for the side and one for the front. Helps to support the weight of the quilt. Don't get discouraged, these are all learning curves and at one time or another we've all had some problems.