I hate to tell you to throw a part at your problem, but go buy Rodney Dickman's slave and remove the one you installed. It is astonishingly superior to any other choice.
It DOES sound like you still have air in the system. But check this first: is the clutch pedal, at rest, 1" higher than the brake pedal? If not, then you have a mechanical problem under the dash.
The bleeding process that works is quite strange: you must bleed the slave cylinder. V8Archie describes it better than most anyone else, go here:
http://v8archie.com/v8Archie/ToC6.htmGood luck to you....the Fiero clutch is a very strange beast and people have actually sold their cars trying to get it to fully disengage.
Larry