I'm too lazy to type the whole story in, and anyway, a pictures worth 1000 words, so these videos are worth about 1,232,476 words. Not bad for a few minutes work...
These videos are in Flash, so you'll need the flash player to watch them (you probably already have it, a link will show if you don't have it). You have to click on the video once to activate the player and then click play. That's becuase of some lawsuit against google about something stupid I think.
Part 1 - The ex-water heater.
Part 2 - My greasy setup - the tanks and hoses and doomahickies
Part 3 - the compressor. It really sucks