I think the problem, at least partly, is how loose the feet are. The feet on my Brother tend to swivel left and right, but the feet on my Pfaff are firm. Also, the location of the 1/4" marks on the brother are not located where I can easily see them so I tend to move the feeding fabric to the right, which in turn makes the leading fabric move left. I'm going to try marking the quarter inch line with painter's tape like someone else on the board does.