Our original Moen 2 faucet system was leaking from center cartridge and spout was deteriorating with leaks. We decided to replace with a center faucet and hose sprayer. The most challenging part of this task was removing the old faucets. They were secured with large plastic washers that were frozen to the basin. I had to drill the washers so that they eventually broke off. Once they came off, the installation of the new faucet was incredibly easy and completed in an hour by following clear and illustrated directions.