This is my 2nd set of racing clutch from Exedy and it has always slipped on first gear. No matter how much I took it easy on the first 500 miles to break it in... IN addition to clutch chatter, which is normal for these types, but what I don't understand is the amount of slippage! Especially when I'm trying to inch the car away on my slightly inclined driveway.

 

Wow I was gonna say don't run it hard but you kno that. I would contact the manufacture on that and see what they say. I would push for a refund and extra money for install labor if it was done at a legit shop