I am working on my first quilt and just finished hand quilting the center medallion held in a hoop. On the back, little bits of Warm & Natural batting is poking thru where I pulled my needle to the back. Do I need to wax the thread or purchase a special type of thread or needle to hand quilt? I am currently using Gutterman 40, which I also use in my sewing machine. Any help would be appreciated as I so VERY MUCH want this to come out right. Thanks in advance!!