On mine I kept hearing the shocks banging at full extension after a dip. I removed the top nut washer and rubber spacer then added a 1/2" nut below the lower washer to space it up further then replaced the washer, rubber spacer and reattached the upper mount. No more noise. From bottom to top of the upper mount: 1/2" nut, washer, rubber spacer, A-arm, rubber spacer, washer, retaining nut. This effectively gave me another half inch of travel which was all I needed.