The original jack screw is worn. (sliderTelescopic slider and rubber bushing already removed) The original lubricant was gray due to metallic content.. The flexible link between jack screw and motor was upgraded with a mini u-joint assembly. Proper care must be used when removing upper and lower plastic column covers... You will need to turn the steering wheel 90 dgrees to access two phillips screws normally hidden byehind steering wheel. All replacement parts were easy to install..