Well my idea of using rubberized drawer liner material only kind of worked. This really works. You use a craft item called plastic canvas. I'm sure your wife can tell you where to find some. Probably at a craft store like Michaels or Hobby Lobby. Anyway you need the standard mesh that comes in 10 1/2 x 13 1/2 sheets. It looks like mesh plastic. You need one sheet for every 10 ft. of track or so. I cut them into 1" x 8" strips. One inch is a six hole grid. That is the width of the connector slot on the underside of the track.
I laid out my track and actually drew lines through the arrow slits to show the center of each lane. I use arrow track. Then staple down the strips. Place staples about 3/4" in from each end to enable you to lift that end to slide the strip into the track connector slot. Do one at a time. When you are done you will have a track does not wiggle. Does not slide up or down.
I did 20 ft. of track including cutting the plastic canvas and stapling it down in about 20 minutes.