Dear Friends, I did buy a Kemore Sensor Sew 70, had it repaired and it works fine. Now I have another problem. I ordered a zipper foot from Sears. It came and the problem is I do not know how to attach it to the foot that is on the shaft. It does not have a drop down button that allows you to change a foot. I am thinking that maybe they sell a foot that is just "naked" and you attach a foot to it. It must have a release button...Does that make sense? Maybe someone can help me. Thank you,