I also do my fmq on Juki, at first I was lowering feed dogs and setting stitch at zero, now I leave the feed dogs up, stitch at 2.5, for me the most important is setting speed at low or comfortable speed that you can control stitch length. I keep 12 inch sandwiched squares near by, to test my stitching after each change of bobbin and to get comfortable with whatever FM pattern I am quilting, and I the presser foot is adjusted, 'the blue line' is all the way up, and oil, oil and clean