Reviving an old thread as I do my own clutch replacement.
When I pulled the thrust plate and housing cover I noticed a lot of variation in the clutch contact surfaces. It's almost like debris got in there and ground them; the old clutch is at ~5.25mm so the rivets aren't the cause; it must have been something else. How smooth do these faces need to be with a new clutch. I'm pretty sure I know the answer ($$$).
Also, what is the service limit of the diaphragm?
Thanks for the suggestions. I attached a photo trying to capture the surface variation.
