Actually, the H2O2 and vinegar soak will only dissolve surface lead, but that is all you really need anyway. And you want to remove the parts BEFORE the solution turns blue/green. It only takes a couple of minutes. If you keep them in too long, you will actually start to pit the surface of the brass and form nasty black spots.
Homegrown Hops - that looks like a stainless bulkhead on your mash tun. Is it? Where did you get it? Can I see more pics of that part of the mash tun? I'm very interested.
