Nice work on the cleanup and replacement! That clean-up is a good example. A good reminder to take some extra time and freshen everything up when apart.
With that kind of care, it's no wonder your car looks so good after 220K!!
Also, I've found sometimes that clutch components can be out of balance when new. In my line of work there are no "good" vibrations when it comes to rotating equipment. Even using a simple cone type lawn mower blade balancer, or wheel balancer can show how out of balance some components are. You can drill holes or shave metal in non structural areas to acheive balance.