We Lowered the Temps!!
Thanks to all of you, and you know who you are, I followed your suggestions and it looks like I lowered the temps.
First, I turned the black head on the .15 CV-R(S)
(thanks atm92484_3) and the vertical slot now faces front/back to let the air flow through wwile the truck is moving.
Second, I reset the Needle to 1 3/4 turns open as the O.S. link stated it usually ends up at.
Third, I closed the Mixture screw about the width of the slot in the screw.
After running at temp a few minutes, I decided the top end was toooo rich, so I closed the Needle the width of the slot in the screw. Presto!!
Temp outside today was 85 degrees, moderate humidity, and yes, I was running in SHORT grass.
The highest temp I recorded was 276 after some hard short full throotle runs. Mid-3/4 throttle runs only even produced one temp check in the 260's, most were in the 250's or 240's.
After running, I did raise the ride height just a little, to help cut down on possible drag.
The only QUESTION I have now, is should I scrap the A5 plug and put in my #8 instead?
Thanks a lot. I read every reply, and print most for future reference. You guys are great!!