Make sure you replace the throttle shaft seals, auto zone does not have them. When I did the rebuild on my 86, the shaft seals were dry/brittle. It's an easy rebuild.
I had the same problem. http://i114.photobucket.com/albums/n254/oliver_j/Photo_032907_001.jpg http://i114.photobucket.com/albums/n254/oliver_j/Photo_032907_003.jpg http://i114.photobucket.com/albums/n254/oliver_j/Photo_033107_002.jpg http://i114.photobucket.com/albums/n254/oliver_j/Photo_040207_004.jpg http://i114.photobucket.com/albums/n254/oliver_j/Photo_040207_002.jpg http://i114.photobucket.com/albums/n254/oliver_j/Photo_032107_003-2.jpg http://i114.photobucket.com/albums/n254/oliver_j/Photo_033107_001.jpg