I have no experience with this product. I too had puckers in my quilt sandwich until I switched from pin basting to Hobbs 80/20 fusible quilt batt. It is kind of a pain to iron it full size on my basement floor but I have been happy with the results. I would never go back to pin basting over fusible batt or 505 basting spray. Some people do Elmer's glue basting but I have not been too successful yet with that.
I would try a different basting method before going to the expense of ordering the wall myself.