it shudnt shutter unless u got a exedy paddle half worn.
last time i fitted the organic, the peddel stuck to the floor, the lad said some spring wasnt strong enough...he sorted it after a long story.
and its the longest clutch iv had in the car, had 2 3paddles and this is the 3rd or 4th organic. carefull what u buy.
id only trust the traders on here for them. no matter how cheap or dear.,