I just put on a RE 3.5" lift yesterday, and now when I let off the gas at lower speeds there is a "cough" sound coming from the rear end. I put on a 1" t-case drop as a band-aid until I can get a SYE and driveshaft. I had a cherokee with this same setup before and I never noticed this. The rear axle is the 8.25, and the t-case is a 231, if that helps. Thanks.