When you tighten up the pressure plate do the release fingers come close to the center of clutch disc not allowing much travel for clutch to release when stepping on pedal? If the disc is too thick this can happen. A work around for this is to put six good flat washers between the pressure plate and the flywheel where it mounts, one for each bolt. The thickness of each washer must be the same but sets of thinner or thicker will allow tuning your clearance. Maybe start with .040 thick to match the difference between your disc and stock. Or get a thinner disc.
