Update:
The chattering/shuddering only got worse to the point it was almost undrivable so I took the clutch back out of the car. It appears the clutch is engaging first on one side of the pressure plate and flywheel. Spec is still telling me that this is normal during break in. What do you guys think? Could my resurfaced flywheel be the problem? It was also causing a loud rattling noise like something was flying around in the bellhousing when the clutch was not disengaged.
Also, is this gap between the pressure plate and flywheel normal?
Does it need to be shimmed?
Thanks,
Scott