I took my brand new Commando Green JK mudding for the first time last month. about 500 miles later I started to hear a rattling sound from the transmission so i cleaned it up and took it to the dealer. They said that the clutch needs to be replaced because I got mud inside the bell housing, and the warrantee won't cover it so it will cost $1350. I told them not to fix it and I'm going to take it to someone who specalizes in transmissions because I don't have the time or equipment to do it myself. I looked under my Jeep today and saw the giant hole just behind the flywheel where the transmission mounts up to the engine. The vent is about 6 inches long and doesn't seem to have any purpose. I was wondering if anyone has plugged this hole or has any idea of how to cover it up.