Recently, when I was getting my 2004 V6 Highlander smog checked, I noticed my exhaust system jiggling around when it was running on the dynamometer. Fearing that some of the exhaust system hangers may be missing, I inspected the exhaust system when I got home. None of the rubber "donut" hanger were missing. My exhaust system can move approximately 0.5" to 0.75" in any direction with only a slight push. Is this normal? Does your exhaust system move that much too with a slight push?