well the clutch was installed by some friends who work at the local firestone who also both have GS-R's. don't know about the clutch assembly although the slave master cyl. was just replaced about 20k mi. ago. and the "break-in", i waited my 200-300 mi. b4 i really got on it. oh well though... it's not really that bad and i think i'm gonna go ahead and put the new stock in