I had used a generic 1/4 in. foot for years and could not get a constant 1/4 in. seam allowance. Took my machine in for service and the mechanic said I was using the wrong foot. With my new machine I will buy only Janome feet. This machine has only two needle positions, one position is for 1/4 in. seam and the other the needle goes through a hole in the foot and that is, I think, a 3/8 in. allowance. Glad I don't have to fiddle around with the needle adjustment any more. Now to get me a Janome brand walking foot.