ok, so i found out i didnt have the headgasket replaced, it was the valve cover gaskets that were replaced. Well since the engine is still low mileage with no sign of bhg failure yet, would it be safe to do the re-torquing procedure? would the dealership be able to do this, because i fail when it comes to working on stuff i dont know anything about. it sucks that toyota never had a bulletin on this and cover it under warranty for the lifetime of the vehicle.