A4Modded

I am having problems with a b5 a4. The clutch is dragging as of now. I have taken the clutch slave cylinder out and took a look at it. It is not leaking fluid. I have also bled the system of any air. Is brake fluid suppose to flow out of the bleeder if the bleeder is open without the clutch on floor? if so mine does not, but i bleed it i have fluid come out. Is the only way a slave cylinder can have something go wrong with it is leaking? Does anyone have any ideas on what may be wrong.