Hello guys, Need some advice from you Guru's. Have changed out HEAD GASKET, THERMOSTAT, WATER PUMP. My 1977 BJ40 ( stock B diesel ) is still getting too hot at climbing and uphill freeway speeds. Way to hot. I will be checking out the RADIATOR FLOW but hard to believe that might be it. Rad seems in good shape. Question since I do not know enough about B, 2B and 3B diesels. What else can cause this motor to get hot at Climb or Uphill Freeway speeds? No smoking, Compression over 420 and even, idles perfect, does not overheat at slower, around town speeds. Thanks for some info.