Thank you for the link. Yes, that is interesting and reinforces my hunch that I'm dealing with a wobble in the flywheel which is most likely a crank flange that isn't running true or a flywheel with a manufacturing defect. The old clutch had some chatter, that is what I wanted to eliminate with the new one, but the chatter persists. It does seem to be improving some but the new clutch in my TR6 was smooth from hour one. But.....shimming the flywheel means the tranny, oil pan and rear main cap have to come off again.....gonna have to decide if a little chatter is tolerable.....but it irks me that after spending the $$$$'s and hours on the new installation it still isn't right.
Also interesting that his experience with the new release bearing was identical to mine......the thing was junk, noisy and slinging grease. I replaced the no-name new bearing with the old one which carried a USA trademark.
One other possibility is the arms on the pressure plate not being adjusted for identical throw/pressure. The junk release bearing has me wondering if the aftermarket pressure plate may leave something to be desired. Replacement parts for our cars is really problematic these days.