A few weeks ago I replaced my clutch cause the hub broke. I inspected the centerforce pressure plate and it looked good. All the weights were there and nothing was bent. The surface was in great shape so I used it with a new clutch disk. It worked great for a while but the chattering has come back. I must have missed something. I can get away from the chattering if I use the clutch like it was 5.5" multi disk clutch. It's an on off clutch now. I'm I'm sitting in neutral a and i let the clutch out normally I get a slow vibration like the pressure plate is off center. So this weekend I'll be dropping the transmission once again to change the pressure plate. I'm also going to put in my Howe throw out bearing as well...the centerforce pressure plate would not work with the Howe bearing but my Hayes street and strip pressure plate will...I really don't feel like doing this job again ....🙁