Shirley, I have a 930 that I now use as my back-up machine. I purchased it used and when I took it to a dealer for a tune-up, they told me the foot should work as you described....it has never functioned properly for me, and I never pursued it. I am told it is very difficult to get parts for this model...which is too bad because I love that machine! Will be interested to see if someone has some info for you!