Hello Matt and thank you for the feedback you posted on the Home Depot website. We are sorry to hear of the difficulty you experienced with the non-metallic, push down drain assembly with overflow included with the Moen Banbury 4 in. Centerset Double Handle Low-Arc Bathroom Faucet in Chrome. Moen manufactures our drain assemblies to be used on most sinks with an overflow that are sold today. We have found that most installations are successful when installing the rubber gasket that is part of the mounting hardware with the tapered side pressing up against the bottom of the sink.If you flip the rubber gasket that is part of the mounting hardware so the flat side is pressed against the bottom of the sink and use plumbers’ putty on the flat side, in most installations this will be enough to install the drain assembly so that it doesn’t leak. Our product specialists are available for pre-purchase, installation, and warranty assistance.