OK here goes. I bought a 30cf pony at the LDS last night. Nice and shiny. How old could it be right? Well like an idiot I blindly trusted them and was a little annoyed when I got home and saw the date stamp of 07@02. So basically 2.5 years and I need a hydro. It was also empty, no air but with valve attached. So I start to thinking, not really good to sit around for 3 years without air in it. I stick my flashlight in it just now and, I know aluminum won't rust, but it looks like black rust on the bottom, like pitted type spots. And on the sides 1-2 inches up. Is this Aluminum oxide "rust". Now I'm concerned it'll fail hydro in 2 years.........Did I get burned here????? I'm going back tomorrow as I paid new price on this. Never ends..............