I was just on the phone with SPEC ordering my stage 3 modular clutch. They have great customer service! My order is being shipped overnight so I'll have it in the morning! Yay! They said that light chatter and slightly rough engagement is normal during the first 1000 miles. It will smoothen out as it breaks in. The clutch pedal should remain fairly light with this clutch. Also, they don't rivet the modular clutches, so they are re-buildable. I can't wait!