The units that are furthermost from the www.faucetsuperdeal.com handle are the units that quit normal water from dripping when the faucet is closed off. All the units should be replaced when the faucet is taken apart. Use a screwdriver to eliminate the attach holding the appliance and device areas onto the end of the device control. Roll the units off the control and then set up the new units in the same purchase and direction. Put the device control into the Waterfall Faucets faucet and tighten up the packaging nut. If the faucet still leaking after changing all the units then it may be time to restore the dripping faucet.