I have a MOEN Kitchen sink that was leaking. I took it apart, bought some replacement parts, and put it back together. Now, when I raise the handle the sprayer works (both cold and hot) but no water comes out the faucet. If I loosen the black screw-in device that conatins a plastic washer enough, water starts to flow but then the assembly is no longer flush and doesn't assemble properly. Any ideas?