Ebay now has one, I have the other. Yes, I will be taking one apart and will document the whole process for the forum.

In my case, it seems that the SC shaft likes to turn some all the time. Maybe that's normal. Does anyone know? The SC shaft and inside balance ring turns when the SC clutch is not engaged. A simple way to engage the SC clutch when idling is to turn on the A/C. That engages the SC clutch and you can hear it click in. The rotor shaft seems to be turning with or without the clutch engaged. Not sure if that means a bad pulley. Only the pulley bearing was replaced, not the whole pulley. It grinds just a little bit when SC clutch is disengaged and then really grinds bad when engaged. It feels solid (no shaft play) and sounds fine if you just spun it by hand with the engine off. You should be able to put a 14mm socket and electric drill and spin it up to test for noise and vibration of the shaft alone without the pulley rotating. But I guess the only way to tell for sure is to take the thing apart.