I am curious to why you are using high loft batting?? I have cross hatch many of my quilts over the decades using Hobbs 80/20 which has what I would call a bit of fluff so my cross hatching shows up nicely. When quilting high loft batting, the batting is always going to want to shift and I doubt if you will get the result you want. I was under the impression that high loft polyester batting was used for quilts to be tied. SORRY !!!