Quote Originally Posted by rspears View Post
Are your fans mounted to a shroud panel, to force all flow through the fans?
Quote Originally Posted by rspears View Post
.... puller fan if it's mounted to a shroud plate.
Does your radiator have a shroud for the fan(s)? I really think if you pull the two outer fans you'll see a difference in the operating temp, provided your puller is a good, high capacity fan with the controls set right or even with a three position toggle, Off/Low/High if you want manual control.