i just got a spec stage 1 with fidanza aluminum flywheel and was about to post with the same concerns. light pedal feel, shuddering while pulling out,.. also clutch take up seems higher in the pedal travel than before with a shorter range of take up. the shuddering or the catch and slip feeling i thought was because they didnt surface the flywheel, which i asked about and was told that it wasnt. is surfacing necessary with a new aluminum fidanza?
