Hi Ann
I have used the silicone spray you mentioned, however, that was five years ago - I'm not sure it is still made. I have had better luck using a piece of silicone that fits over your machine bed with a hole for the needle...there is a commercial product called the Supreme Slider - you can Google it to find it...pricey, but works well. Saw a thread on this awhile back and it was mentioned some have had good luck purchasing a piece of silicone at Bed Bath and Beyond. Hope that helps :)