I have tried lots of things to avoid the puckers at cross seams. I do use a walking foot, I gently pull the fabric taut on both sides of the walking foot as I come to the cross seam. I also do not sew long seams because the fabric still tends to advance. I alternate stitching directions on the first quilting rows going across the quilt. (left to right, then right to left) On the lengthwise quilting, I start in the middle and work out to the edges. Good luck! :thumbup: