When I quilt, no matter which stitch pattern I use, I need to use a walking foot. A lot of machines have a special walking foot with a small "blade-like" on the bottom which is suposed to be kept in the ditch and thereby make it easier to sew more evenly. Frankly, I just eyeball it and use my regular walking foot (I didn't get the special stitch-in-the-ditch one until recently and I'm an "old dog" with a new trick).