I agree with Quiltinginfla.......I use to get myself so upset about a perfect 1/4" seam...well I dont anymore....Ive learned getting a straight stitch is better....so when I do my 1/4" I just use my zigzag foot which is a 1/4" in width and it always comes out right.....and taking your time is also something you have to do until you get that look you want.....so play with your machines different feet and I bet you have one that will help you to achieve that look a straight line....happy sewing....Trish