You might also try a quilt as you go design. I have arthritis in my hands and can't grip the fabric tight enough for a full sized quilt when I am quilting. I usually construct my quilt in smaller sections and quilt them and then sew it together. I do the main body first or block by block, then attach the borders and quilt them. A good pattern book for this type of quilt is written by Eleanor Burns I believe. Her log cabin book or quilt as you go are both good. I like this method as you aren't fighting all the weight of a big quilt. Also, are you rolling your quilt ends up tightly? I find that I don't even have to pin if it is rolled good. And batting makes a difference. I think poly batting causes it to bunch and buckle more than cotton. I use cotton-80 % cotton and 20 % poly.