I have now removed the engine from the car and removed the transmission from the bellhousing. With the clutch removed , it seems that the flywheel bolts are all still tight. They have the locks still in place. The locks are the ones with tabs that are bent against the bolt heads. I have been told ,by guys who know more about engines than I do, that the .004 "extra" crank endplay is not uncommon, and would not cause noise. I have no idea what to do next. thanks.