Hello,, I have a 2011 Rubicon Unlimited. I bought the jeep with a mopar 2 inch lift installed. 2 weeks ago I noticed a rattling sound every-time i would go over a bump. It turns out that the aluminum bump stop that rides on top of the differential on the drivers side is missing a bolt. The dealer has no idea what size of bolt I need to get to replace it. Any help would be greatly appreciated. I have attached an image of the bottom bump stop. Gracias,