arrggghh

Hi I bleed the clutch with a vacum at the end of the line to the slave, and it worked great.There is a valve externally that can be used as well to bleed.Im wondering if the internal parts of the slave are worn? I did take out the starter motor to see if I could access the slave, but no.I did see on a forum that the 5 speed manual has an external slave which sounds way more mechanic friendley than this arrangement.So to summarise. I still have a very intermittent clutch , once its blleed , its good, then over a few days it loses all it function,? Any suggestions would be appreciated,

Clutch works for a while then gets progressively worse , as in no clutch at all.Cant find any leaks , have changed master out, has anybody tried to change the slave cyclinder mounted on the gearbox casting.If so what are the procedures?