'Nuther update 4-27-17
..... Can I pull the carburetor, look, adjust, and replace it without replacing the thick gasket underneath it? ....
I think that's called the insulator.. and yes you should not have to replace it unless it looks like it won't seal the carb to manifold. But... it's been awhile since I had my 85 and rebuilt my carb.
Gnarls.