Seeking a full stop to the spate of high-profile fatalities in the race that stops Australia, Racing Victoria this year tightened the veterinary screws. The practical rollout of these efforts can hardly be described as an unadulterated success, however. One of these new measures was a precautionary CT scan of all runners in the days leading up to the G1 Melbourne Cup--a target that hit the skids when Racing Victoria's new $1.27-million CT unit suffered a malfunction with the Cup field only half scanned, leaving the rest to be X-rayed...