It doesn't matter what 1/4 inch foot I use, I always adjust the needle to make a scant 1/4 inch placement. My machine has 18 needle positions....that is where I find my accuracy, as well as watching where my hands are as the pieces are being fed. I learned in a serger class that left hand placement and motion was causing my fabric to be pulled to the left as I was serging. Then I noticed I was trying to help my fabric along the same way on my sewing machine.