I'm in the process of building a beermeister out of an old freezer chest. It will fit 4 Cornys perfectly although I only have two for now. I purchased a used bermeister setup, Co2 bottle, faucet, hoses and tap. My wifes grandfather used to own a beer distributor and I have a box of his old taps. I was going through it and realized that the faucets were the same as the one I bought. Looking inside I noticed that all of them are pretty grungy looking, I'm assuming its tarnish. My wife would like for me to use some of them in honor of her grandfather. Whats the best way to clean these up? Are there washers or O rings inside that need replacing? I dont want to hook everything up and find out that they leak.