i don't know wether to cry or laugh, /forums/images/icons/crazy.gif i feel like a real wheeler now. /forums/images/icons/shocked.gif as some of you know i installed a set of hill shackles and i just ran it up and down my road in 4-hi and at about 30 mph i'm getting a noisy vibration. the CV is not hitting the crossmember so i assume it's the u-joint yelling at me for running at at that angle. obviously i need shims, so my question is will the shims that were on mudbogAD's jimmy with the 2.5" lift work for me or do i need a specific size? i have 4" springs and 1" hill 4wd shackles and a stock driveline.