I am confused when I hear about quilting on a longarm. Does that include the machines that you move the fabric under or just those you place the quilt on the frame? I am considering one that I move the machine over the fabric while sitting down. I have arthritis and can't stand very long at a time. I have problems free motion quilting on my babylock machine. Things just bunch up so much and leave too many puckers. Could someone explain and tell what kinds you use and would recommend just for a home quilter quilting for her dgk's?? Thanks for all the input.