Thanks for the help.
I have read the plugs a few times after race and they looked slight lean/hot. Fan clutch is good, shroud/box are intact. I will try the thermo change, as well as fuel pump check and bowl supply. One thought, because it doesn't like to sit and idle, is I may have compound problems. Your diagnosis of fuel starvation makes sense to me, but I also get hot at idle. One change at a time, re-test, try again. At least the testing phase is a lot of fun.
I really appreciate your help. This gives me a few new ideas to work through.