[Walt Fricke]

Balancing the pressure plate depends. Where did it come from? Is it new and the manufacturer balanced it, or used with an unknown history. Makes sense to balance it.

I prefer to zero balance the flywheel, and the pressure plate. That way you can swap out one or the other without sending both back to be balanced together.

But some prefer balancing things as an assembly, which could include the crank.

I am dubious that clutch disks need balancing - they look pretty uniform and symmetric to me. But maybe someone has had one balanced and learned it was, indeed, out of balance enough that balancing was worth while?