I really like it too! You could try what I did with one of my quilts. It just would NOT lay flat, every time I tried to smooth it out, it fought with me. So I took a sheet put it on my carpeted family room floor and then put the quilt on top of that and T-pined it, spraying it with a squirt bottle and kept working with it, smoothing and pinning, until I got it nice and flat and put many T-pins all around and then when it was flat and to my satisfaction I sprayed it even more! I let it try and when I took the pins out it soon learned just who was in control. I'm not sure this will work for you with the batting and quilting but it might be worth a try, I had blocked my quilt like this before I sandwiched it?
Let us know if you try it, I would like to know.