The SoftStep seems to use four FSRs per pad, one in each corner. If you press directly on a corner with a finger, it responds more "directly" and more sensitively than if you press in the center of the pad (between the FSRs). So, for some of my pads I tried sticking on some of those little rubber furniture "bumpers" you can get at most hardware stores. They look like little truncated pyramids, and usually come in black, clear, white, or brown. They have adhesive on one side. I tried the 1/2" size; they come in many sizes. I stuck one on a single corner of some of my SS pads, resulting in a very sensitive "button" that is easier to locate and hit with my foot. Its more like striking a guitar pedal footswitch. And, since the bumpers are small and placed in only one corner of a given pad, the little buttons are farther apart, especially if you put the bumpers on a lower corner in the bottom row of pads, and on upper corners on the top row of pads.
If you try this, you will find you need much less "striking" force, and will need to adjust your pad sensitivity in the sw. Also, play around with "maximum" vs "average" for the sensor response settings.
I am assuming this simple, noninvasive mod would not effect warranty or direct too much force onto an FSR, but if so .... moderator, please remove my post! I only want to do good in this world....