My 1985 V6GT clutch pedal became soft while driving, and I thought it was the classic slave cylinder failure. I've replaced many a clutch slave cylinder, and even a master cylinder once or twice on some of the Fieros I've owned in the past 11 years - This time NOTHING worked to fix it like in the past. I replaced the master and slave cylinder, bled the system, and it was unusually hard as a rock this time to put pressue on the clutch pedal. Turned out the clutch slave arm had cracked. I replaced it with one from the Fiero store, but for the first time in 11 years, could not get pressure to build up. Could it be a bad line this time, or the bleeder valves and connections need Teflon tape, or...? I am wondering if the new slave cylinder could have been damaged prior to my finding out that it was a broken clutch arm? I'll take any suggestions.