Shifting issue

[pekingduck]

Here is what my clutch basket looks like after 80.000 km using a borescope, maybe somebody can help where the clutch drag comes from?

Could there be a buildup of something over time and is it an idea to use automotive oil ONCE which is supposed to make a clutch slip a bit more?
Just guessing here.....

https://youtu.be/N6AK-_9jbac

Cormanus, the C-Clamp (or vice, or giant Crescent wrench) is used to prevent the piston from moving out of the housing. One side is on the center of the outer housing. The other side goes against the piston (put a big thick washer or equivalent over the seal to protect it).

The seal is to hold the grease in and dirt out for the round tip of the pushrod.