OK so this has been going on since a few weeks after I bought it. When I shift at higher RPMs, (anything above 3500 or so) there is a buzz/rattle sound when I disengage the clutch. You can even feel it in the clutch pedal somewhat. I have been watching the TSBs and this board for similar problems but so far the issues most are having is a squeek. The dealership has had it twice. The first time they changed the throwout bearing per the TSB even though the actual symptoms were different than described in the TSB. It really seemed like a throwout bearing noise so we hoped this would work but no change. Then this week they changed the clutch disk as per the new TSB related to clutch noise but still no change. The mechanic was vert sympathetic and said he definately agrees there is a problem but doesn't know what to do at this poiny. He said everything looked normal when he tore it apart. He also said he has heard the same buzz in other new JKs. So..... anyone else having this issue? And more importantly anyone found a solution?