I have every 1/4 inch guide known to quilter folk and to say I've conquered the 1/4 inch seam would be a lie. I do my very best and most of the time all works well. Do not despair, you are not alone in this quest. I think my 1/4 inch quilting foot is the very best friend in my endeavors I have found. If I pay attention to what I'm doing and don't let my mind wander it works quite well.