I have the above faucet and it is leaking from the sprayer when the water is on also when the sprayer is in use the water still comes out of the spout.I have replace both valve cartridge.Oring and the diverter .now the sprayer is still leaking when the water is turn on and basic everthing the same .the model number is 4233 721 002 this is about ten years old. Than ks agin to this forum for the past help..George