I "had" the same problem but since have bought a sewing machine with the stop/start button and I have not even taken the pedal out of the package. I know your frustration as I had that problem. I tried everything - the pedal mat, a car floor mat, that shelf liner stuff, etc. I have a wood floor and nothing seemed to work. Whatever kind of mat I tried would just slide - very frustrating. Hope you find something that works for you.