flushed the radiator.... basically removed the paint from the upper tank and shined the brass.... washed down the fins on the core and put a light, very light, coat of flat black spray on it just to dress it up..... both thermostats I've put in have been 180's.... if I hadn't misplaced the original temp sensor I'd put it back in and see if that helped.... thing doesn't overheat.... just showing on the high side on the temp guage....Rx/CTOC