I'm not a plumber but a home owner. Just had a question about a washing machine faucet. House is brand new and has a warranty so they will be fixing this, but they can't get out here until Monday. The valve is leaking very slowly even with out a hose hooked up and the valve is off. The plumber told me this valve may not be sericeable and they might have to remove drywall to fix it. Anyway here is a picture of where it's leaking. Any ideas what it will involve to fix it? Everything is brand new including the home.