I have a cheapie Brother and this would happen to me sometimes ... unless I'm misunderstanding what is happening for you. When I have this issue it's because the speed that I'm moving the quilt is too fast with the speed I'm running the machine. I don't know how else to explain it. Basically, if I move the quilt through slower or speed up the machine, the problem goes away. I have found that it works best the faster I go.