I have a 1G and was having a ton of clutch issues.

Replaced slave (had a cracked wall), replaced master (was leaking) and took out my entire clutch pedal assembly and welded it up (had lots of slop as many 1Gs do) and then we bled the crap out of it and only then did it disengage (and that's with the master rod almost fully extended). You'd be amazed at how much fluid and how long it took us to get all the air out!

If you're confident your master and slave are good to go, then bleed, bleed, bleed. Get a buddy (or your dad, a sibling, etc.) that can help you and/or at least watch the line. Also, every once in a while, close up the bleeder, pump the clutch until it's 'stiff' and then bleed again...this seemed to help us get a lot of the air pockets pushed out.

Not a lot of parts in the clutch system, but unfortunately they can all have a pretty dire effect if not in proper working order.