Keep in mind that the Spec III is a heavy duty rece clutch. Mine feels like an On/Off switch more than a clutch. It you try to feather it too much it shutters and wehn the clutch is in it chatters a bit too. All these symptoms are quite normal for a Stage III clutch. Just takes some getting used to. I have a Quaife, but Keyser has a Torsen and has some interesting sounds too.
