Cylinders running too hot

1st off your running a modman intake and it's just one big open plenum.
2nd did you ever think that the center tubes are right next to each other and are just hotter for that reason.
3rd what coating is on the headers, you know that a heat gun will give you a false reading on shiny surfaces, and 200*F is not hot for a header tube so I think it's a false reading.