You dont normally have to bed in a clutch, but when i fitted mine, just went on a hill, and just road the clutch a bit, havent experienced any shuddering in mine, and i didnt machine my fly wheel. just rub it back with some corse emery, and bang everything back in.

Flywheel machining is very important... if you've not done it, your shuddering is probably being caused by high spots on the flywheel.

Lesson learned, do it next time!