I don't know if anyone is still interested in this problem we had last week, but D.W. talked about it on Trackside last night.  He said he conferred with drivers and track workers and found out that they recently repaired the track in the tunnel turn.  No big deal except for the fact that instead of leaving it as a dip, they made it into a bump and with the tire pressures and Camber already being stressed out, when the cars ran over it..................Boom!, there goes the tires!