I use my walking foot with the feed dogs up when I do straight stitching to quilt. To do FMQ, I drop the feed dogs, use a slider, and move the material with my hands. There is a kind of rhythm to FMQ. I found I can't pull the material, I just guide it and found it is easier to do at a faster sewing rate than a slow one. It like driving a car in first gear rather than third, if that makes any sense. ( shows my age driving a stick shift vehicle). Also, does you machine have "fm" built in on your computer screen? Just practice, keep your shoulders relaxed and don't give up.