If you want a nice even gather and you are not going for a SUPER twirl then what i do is crank up the tension all the way (Mine is 9) and the stitch length (Mine goes to 5) and slow down the machine to the slowest speed and you will have an awesome even gather! Works great for twirl skirts and jumper dresses! lol, It is my perferred method! Here is the only close up I can find of this method. it is a ruffle at the bottom of a pair of pants but you can see it gathers Nice at least!