U-Joints endure an incredible amount of stress, and failure can lead to costly replacement of broken driveshafts, axleshafts, and pinion gears. Check all U-joints for any play by moving the joint in every possible direction while feeling for smooth fluid motion. Grinding or roughness in the joint means damage and the joint should be replaced. The front Dana Spicer U-joints have been through three years of trail abuse and have some side-to-side play, so they will be replaced with CTM greaseable U-joints that carry a lifetime breakage warranty. The factory axles are showing some twist and are being replaced and upgraded to Alloy USA axleshafts that are known for off-road durability and are a perfect match to install with the CTM U-joints.