Pitstop... whatchoo talkin' 'bout Willis? LOL

Edh... yep.. the mains are definitely Rhom Air. I'm familiar with those. I'm attaching more pics. I haven't had the air tank out and I can't reach back far enough to tell if there's another nipple on the back side. I have a good shot of the nose gear, so you can confirm your guess from my description. And, as you can see... the one airline goes all the way back into the vertical fin. And it's pretty well stuck in there. I haven't tugged on it very hard not knowing if it's supposed to be up there for some reason. From what you tell me, I'll bet it was meant to go on the back of the air tank. As you can see, there isn't an air control valve or filler or anything else. As I said before, this plane was never setup to fly.

Tom