Individual header tube temp. Egt. Varies

Hi all,

Anyone ever paid any attention to individual egt per each individual tube on a sb?

I bought a cheap infrared temp gun, and all my cylinders range at idle from 180 degrees F clear up to 280. 1,3,7, 2,6 all seem to be 180.
#8 is actually always my hottest. Clear up to 280. Then #5 and 4 are more like 220.

Is the temp on 8 just the typical lean cylinder of the way a sb flows? Or i have more going on?

Single plane holley intake. Cammed 318. Double pumper carb. Running 13.5 AFR at idle. On the passenger bank.

Engine runs ok. Would never even know about this had i not bought the temp gun. Am i making something out of nothing?
Maybe screw out the passenger rear screw on the metering block another 1/2?
Thx!