clutch pedal loses pressure?

[mach1one]

I've had an act 2600 in for about 5k miles. Only twice has this happened, the second time being tonight. I was stopped and holding the clutch to the floor, when the car started to move forward. I put it in neutral and let out on the clutch, and it stayed there. I pulled it off the floor and drove the rest of the way home.

This is only the second time it's happened, but I"m not sure what'd cause it. My friend and I replaced both the master/slave clutch cyl at the time of the clutch swap. Any ideas?

 

[Irrational]

when the clutch is at the top can u grab it and bring it closer to u? when u bleed it u need to use your hand and make sure u bring the clutch all the way up off the floor before opening the bleeder. This is assuming u already checked for leaks.

 

[mach1one]

when the clutch is at the top it's fully let out, can't pull it out any more. It was leaking out the m.c., but that's why we replaced it at the clutch swap. I'm not losing any fluid so I can't imagine it'd be leaking.