Well the alum dust your finding is not comming from the face ,Because the alum flywheel should have a Steel clutch facing. For the disk to ride on. I know My Ram Alum flywheel was Built that way.For you to be having them shavings/dust Something is not right Or is Lose.

Larry/Twisted6
[oooooo] smile
Adding CFM adds boost smile
shocked God doesn't like ugly.