clutch slave cylinder rebuild Honda nighthawk 650 1983

My Honda Nighthawk 650 from 1983 started to have clutch problem, the hydralic cluts stop working. Sometimes it didnt work at all, and sometimes it did work but when I pressed in the clutch handle whit a gear in, the motorcykel did move forward slowly. I did some research and found out that the clutch slave cylinder could be the problem. I took it apart, and yes, it was a complete mess. I made a youtubu how I fixed it, I did some miss spelling and so on but you get the point by watching the video