Thanks Delray,
I was typing my last response when your post was came up. I didn't see it till now. I see your thoughts reflect mine. Just need a little clarification, you mentioned the gaskets were old; were they NOS unused or, old-previously installed and crushed to the post torque thickness?
BTW I have an order into copper gaskets, so I'm already committed. I just need to know what is considered the proper thickness for the old Hipo gaskets.