My 98 Grand Cherokee rear lower shocks flop around on the 2 lower bolts on each side.I am speaking of the part where the shocks mount on the rear end housing,and where the bolt goes through to attach the shock.The rear shocks are only a year old,bolts are tight and the bushings are good. Anyways,the noise drives me nuts,and when I'm underneath it and push up on the undercarriage,you can see it plain as day the lower part of the shock jumps around the bolt. What can I do about this? Go to a bigger diameter bolt? Appreciate any help. Thanks