Unless 16 does happen to do anything (if you can get to it!) I'd be intrigued to know!
I've spent an hour looking though the drawings and it's amazing what there is, but I am still looking to remember where the little (I think) fuel regulator vacuum hose that's still got a bit of brass nozzle sticking out of it goes, I'm not great with spatial awareness, if only there was a 3d version....
Good luck, I'll see if it's in the Haynes if you havent' already, I like an imaginary challenge!
Cheers Agent47, it's all fun!
NEAL