Sounds like clutch chatter. could be caused by lots of things but i suspect the throughout bearing as a bove is out of postion, or backwards, it should have a flange that locks it to the fork. could be the presure plate is not torqued correctly, if you dont use a cris cross torque like on the head bolts or lugnuts, the you can warp that plate and after using it the "Fingers of the presure plate will be out of alignment , and it will cause clutch to get stuck in or out,but it makes unequal presure on the clutch when engaged causing a metal on metal sheering noise, or a metal rateling noise, cause the clutch disk is Vibrating in between the presure plate and flywheel.
any way my .02 I would crack it loose and take a look at the fingers, and maby realign the disk and retorque the presre plate, definatly if all the fingers are not equal.
the clutchdisk on my acura exploded because the presure plate was not torqued right. "befor I bought it"