thanks for the response. I sent my original inquiry via your website question box. Sometimes these things disappear into the aether!
At this very moment I am adding the slate pieces to my system. First, under my Zu druid speakers with some of your Big Fat Dot Teflon sliders. The next step is under the turntable underlain by some thick grungebuster pads. I like the look of these new footers. Too bad they weren't available last month when I made my order! Oh well. something to consider for the future.