On my Sapphire 830. I watched the instructional video again and set as recommended. It won't work. The bobbin thread turns into a rats nest every single time. I have rethreaded everything SEVERAL times, I just replaced the needle last week and haven't sewn much since then. Each time the needle goes down I can hear the clicking of the bobbin and a sound like it's just spinning. I then changed all the settings back to normal and tried to sew a straight line, still a rats nest. I turned it off and back on and it sewed straight just fine. Set it to FMQ again.... Nope, rats nest.