I have a certain squeaking noise in my clutch after i drive for about a half hour. I have blead the clutch a few times to see if it goes away, and it doesn't. I took off my slave cylinder and cleaned up the ball, and re-greased it, which made the noise go away for a bit, but came back after about 2 days. I am kinda stuck now. Does anyone know how i can get rid of this noise? It is more noticable when i release the clutch slowly.

Thanks.