I've tried FMQ on my 403 to no avail. Then after researching I found out that the machines with horizontal bobbins don't do as well with FMQ. Something about the motion & # of revolutions of the bobbin to pick up stitches, I think. However, any of the machines with the vertical bobbins are supposed to work quite well for FMQ. I have not yet tried FMQ with my Featherweight, and just recently bought a 15 "clone" & have yet to take it for a FMQ test drive.