I did position the thermostat correctly and I am absolutely certain that their is no air in the system. I properly bled the system, 9 quarts came out and 9 quarts went in. Also, I used the same concentration of coolant as before.
I am positive that the higher temps are only related to the thermostat. When driving down the highway and stopping, I can feel the radiator and see that towards the bottom of the radiator is cold, so I know that the thermostat is controlling the bottom end of the temp higher than it is supposed to.
The car does not overheat at all under any condition, it just runs warmer than the thermostat is rated at highway speed. In traffic temps, etc. are the same as before.
1999 Dodge Ram 2500 Cummins Diesel
2002 Harley-Davidson Fatboy
Merlin Extralight w/ Campy Record