The 1982 Honda Civic has one of the most elaborate choke/high-idle mechanisms I've ever run across. Rube Goldberg would be proud.
I checked what I could with a vacuum pump, and observed movement where I could while warming and throttling. It seems that the fast idle does not let off exactly when it should, but I can't get a good eye on exactly why. The choke just stays partly closed until you can coax the fast idle off. I think it might be a slightly worn mechanical part inside the choke housing, or just somewhere I can't see, rather than temperature or vacuum related. Carbs are not my strong point really, i prefer fuel injection.
Antny and I decided it wasn't worth taking further time on. It does eventually kick down. The car starts and runs fine. I'm afraid if we took further time to find the real fast idle culprit, we may find that said part was probably discontinued in 1989 anyway. If it ever gives cause for any real concern, we could probably just find an EFI system for it with a bit of work ;) It's a really cute old Civic Wagon.

So he went home.

I also checked my poor bird cylinder #4 out today. Looks like the intake valve is leaking :(
I wont know why until I take the head off. I'll take care of it eventually. It still runs well, but I'd like to get one of my extra cylinder heads dressed out and ready for a swap.
-scotty