1981 Vanagon

The engine sits on the bench, and I  have been reading the procedure for
removing the pressure plate, and checking the clutch surface. They all
say to mark the pressure plate and the flywheel to be able to relocate
them the same way.

What is the penalty for when an overly exuberant son pulls it off,
without making the marks?

Is it some kind of balancing issue? What to do now?

Thanks,

John