After you assemble/install the Allcam GD03S/GDF03M height-adjustable desk, you normally need to adjust the brake cable, otherwise, the two legs might be rising out of sync (one is faster than the other). In this video, Kal showed you how you can adjust the brake cable to ensure both sides of the desk will rise and drop at the same speed. This video applies to the Allcam GD03S, GD03SW, GD03SB, GDF03M, GDF03MW, GDF03MB, it is available on Amazon, eBay, and our website: https://www.allcam.biz/shop/gdf03-series-gas-spring-height-adjustable-standing-desks-sit-stand-workstations/