that was on the stock head gasket, and the thick washers, I think that is what you had recommended for my truck combo, a couple of years ago.
the head i am installing is a new head i ported and polished, stock cummins gasket and o-rings. i was thinking the .020" washers too. someone else told me that my timing may have slipped, from the 19* causing this. does it look like a possibility to you?