Engine balancing questions?

Whether it's internal or external balance, bring them the hamronic damper and the flexplate if it's an automatic. If it's a stick, bring the flywheel, pressure plate & the fasteners. No need to bring the clutch disc because it is never clocked the same way.

I balanced dozens and dozens of cranks during my machinist career. You can take a perfectly balanced crank assembly and install the damper and flywheel and it throws the entire assembly off.

Once the crank is balanced, you install the damper and make any corrections needed to the damper itself, NOT the crank. That way if you change just the damper at a later date, it will only be off by as much as the damper is off.

Hope this makes sense.