I flushed the system and replaced with a 65/35 water/coolant (red) mix along with water wetter. I have tested with both the splash shield in place and removed. The splash shield helps a little, but does not make a huge difference from what I can tell. I also have my fans set to turn on anytime I choose. I have pulled the t-stat out completely and can still hit 200F w/o much trouble (not on track but testing near my house - the Gingerman event will tell me just how well everything is working together). I am in the process of boxing in the radiator in hopes this will help some. My conclusion at this point is that the radiator is likely clogged and probably needs to be removed and tanked to clean it out.
