1999 Subaru Outback clutch pedal stays on the floor

Clutch has been replaced, clutch master cylinder has been replaced. After bleeding the system thoroughly. The clutch will work well until driving a couple blocks then the pedal will go to the floor and stay there, the snout that the release bearing rides on is slightly worn, and the release fork has no preload on the slave cylinder it just rides where it rides untill higher rpm then the fingers on the clutch push out against the bearing and fork which rattlesw against the slave working it back and you lose pedal on next aplication untill you work it 6 or 7 times then will work for a while again. Does this sound like a problem with the slave or a problem caused by loose bearing on transmission snout or something else? Help please!