I hired plumber to install new faucet on my kitchen sink and bathroom basin. He did a good job with it, but while he was installing them he did not use silicon putty under the faucet gasket. I told him or remind him to do that but he still didnít do it and told me you donít need grout under new millennium faucet. Now here is the PROBLEM: every time water goes behind the faucet at the base of the faucet on top of the sink, I get leak from bottom. It is from middle hole. What do I do now?