i changed the radiator because i picked up a bolt on the freeway that caused a small leak in it. i have changed the radiator cap. fan speed looks to be fine rotating at high revolution. i did notice that the site glass to the fluid tank had a slow leak from its O ring i replaced it now i just have to get warmed up and pull a grade with it because it won't get over 185 degrees just running it. when it heated up i was pulling with my boat so i may have to recreate the situation any grade would send the temp to unsafe heat level. As soon as i got off the grade temp goes right back down to 190 thank you for all of the information you all provided