I look forward to our USAC Midgetweek promotion here with non winged sprints on August 7. Here is a link to photos of the improvements made by owner Billy Danials.
I spoke to Tom Wieck (on the grader) and he said they have sifted the surface of rocks. Not a rock to be found.
http://www.midgetmadness.com/forums/...p?showforum=51