and the way to do that,
have someone look at the slave cylinder as you press on the pedal.
-doesnt go in and out (adequately)
hydraulic system
-goes in and out
mechanical(fork, pressureplate, etc..)
o and the way i build pressure is to pump it FAST! my new master cylinder has the same prob for some reason.
i happen to need a new clutch line which leaks so adding fluid works (bleeds clutch for me

) normally I pop the clutch pedal up with my hand until it starts to return. then i bleed some more and repeat (fluid comes out faster). Seems to work for me.
o and you tighten the bleeder when the pedal is at the bottom. then loosen it at the top ready for the next press.