I took apart two fuel caps, and they were both the same. I will dig in the rafters to see if I got any spares. The one spare I found the orange part was no good.That's exactly how it works now and would be fine if the stem end of the valve faced the tank instead of the top of the cap. (See post 14084 again.) Don't know how many more ways I can say "it vents in the wrong direction". LOL
I'm pretty sure my fuel cap has all the parts except the retainer and chain. But if you happen to have a valve assembly like the one in my cap I'd be most interested in how yours goes together!